Animal Well-Being

When making decisions about action to improve animal lives, it is important that we have accurate estimates of how much animals are suffering under different conditions. The current frameworks for making comparative estimates of suffering all fall along the lines of multiplying numbers of animals used by length of life and amount of suffering experienced. However, the numbers used to quantify suffering are usually generated through unreliable and subjective processes which make them unlikely to be correct. In this paper, I (...) look at how we might apply principled methods from animal welfare science to arrive at more accurate scores, which will then help us in making the best decisions for animals. I argue that a combined use of both a whole-animal measure and a combination measurement framework for assessing welfare will give us the most accurate answers to guide our action. (shrink)

What do we owe to nonhuman animals? How should we respond to the many injustices they face? Answering these questions requires philosophical attention to complicated questions about moral status, ethical theory, and conflicts between personal morality and professional ethics. This chapter provides an overview of competing approaches to moral status, ethical theory, and professional ethics, as they apply to the moral treatment of other animals. In doing so, it provides moral guidance to those who aim to protect animals, as both (...) individual moral agents and professionals, in a world infested with animal injustices. (shrink)

In modern zoos, enrichment programs have become a standard part of animal care routines. Although 'higher' primates usually receive complex enrichment programs, encompassing many types of enrichment, these are less common for prosimians. These animals often largely receive food-based enrichment, as was previously the case at Auckland Zoo, where the ring-tailed lemur enrichment schedule contained only three different items, all food-related. Lemurs tend to be considered less curious and quick to learn than other primates, as well as being less manually (...) dextrous, and for these reasons can be overlooked for complex enrichment. However, they have strong sensory abilities, in particular an acute sense of smell (Sauther et al 1999). This paper describes an enrichment program designed for the lemurs at Auckland Zoo with the aim of stimulating all senses. (shrink)

Many human-animal relationships closely resemble parent-child relationships. Yet, as I argue in this chapter, normatively speaking, parenting is not the kind of practice we should strive to mirror in our loving relationships with companion animals. Rather, we should strive to form friendships with animals. This is because friendships, unlike parent-child relationships, are characterized by mutuality, choice, equality, and respect for differences, and these are ideals we should try to foster in our loving relationships with all animals (human and nonhuman).

Commentary on Kyle Johannsen, Wild Animal Ethics (Routledge, 2020). I want to unpack what we should understand by wild animal well-being, and how different interpretations of what matters about it shape the sorts of interventions we endorse. I will not offer a theory of wild animal well-being or even take a stance on the best approach to theories of well-being as they pertain to wild animals. My aim is to bring into view a concern that WAE has largely overlooked: agency (...) and freedom. To Johannsen’s credit, the issue of liberties does feature in his Wild Animal Ethics (2020) (36–39, 41, 47). The interventions that he favors are those that, for a given amount of harm prevention, involve fewer liberty infringements. Liberties can act, to an extent, as constraints on permissible interventions. For all that, Johannsen’s primary focus remains welfare in a sense that does not appear to give much consideration to agency. Fortunately, his approach is open-ended enough to accommodate some of my concerns. My hope is that he sees them as possible ways of specifying the duties of beneficence, if not justice, that he rightly argues we have to wild animals. (shrink)

Nagasawa has argued that the suffering associated with evolution presents a greater challenge to atheism than to theism because that evil is incompatible with ‘existential optimism’ about the world—with seeing the world as an overall good place, and being thankful that we exist. I argue that even if atheism was incompatible with existential optimism in this way, this presents no threat to atheism. Moreover, it’s unclear how the suffering associated with evolution could on its own undermine existential optimism. Links between (...) Nagasawa argument and the current debate about the axiology of (a)theism are also explored. (shrink)

Animals have moral status, and we have corresponding obligations to take their interests into account. I argue that Stakeholder Theory provides a moderate, yet principled way for businesses to do so. Animals ought to be treated as stakeholders given that they affect and are affected by the achievement of the objectives of the businesses in which they are involved. Stakeholder Theory therefore requires taking those interests into account. It does not, however, require that they be given the same weight as (...) human interests. By taking the stakeholder approach, businesses can avoid merely reacting to (rapidly increasing) public outcry over the treatment of animals. Even those who hold extreme positions—that businesses have no obligations to animals, or that animal products and services are inherently immoral—can take the treatment of animals as stakeholders to provide an ethical realpolitik of sorts that is both better for animals and better for business. (shrink)

Our topic is food that is "local, ethical, and sustainable." We defend a surprising claim about such a conception (at least, on certain ways of specifying its three central components): namely, that it may lend support to some varieties of “conscientious carnivorism.” We focus on an especially illustrative instance of (potentially) moral meat-eating: the case of Cinta Senese, a once-endangered pig that holds a special place in the cultural and environmental landscape in Tuscany, Italy. In Tuscany, Cinta Senese constitute a (...) robustly local food product (in the genealogical sense of "local"), where plausibly they lead quite worthwhile lives (in a welfarist sense of "worthwhile"). Further, the recent revival of their dwindling populations seemingly represents a “sustainability success” (in a conservationist sense). Thus, we argue that locavores with welfarist and conservationist proclivities may actually find that they have considerable reason to support, rather than to oppose, this form of animal agriculture – as well as others relevantly like it. (shrink)

Despite the increased attention that has been paid in recent years to the significance of animal interests within moral and political philosophy, there has been virtually no discussion of the significance of animal interests within business ethics. This is rather troubling, since a great deal of the treatment of animals that will seem especially problematic to many people occurs in the context of business, broadly construed. In this chapter, I aim to extend the growing concern that our normative theories should (...) be animal-friendly to business ethics. I consider whether several popular theoretical approaches in business ethics are consistent with taking animal interests to bear on the decisions that business managers are obligated to make. I do not argue for the claim that we should reject any theory in business ethics that cannot count animal interests as providing reasons that are relevant to the moral status of managerial conduct (though I think that this is true). Instead, I proceed on the assumption that many will find this claim plausible, and argue that those who do have reason to doubt that many of the prominent theoretical approaches defended in the business ethics literature are acceptable. My main aim, then, is to show that those who believe that the correct theory in business ethics must be animal-friendly, at least in the limited sense of counting animal interests as relevant to the moral status of managerial conduct in a plausible way, will need to look beyond the main competing theories that occupy present discussions. (shrink)

In How to Count Animals, more or less, Shelly Kagan sketches and argues for a hierarchical account of moral status. Although the book is fairly lengthy at 304 pages of text, Kagan is correct in calling it a sketch, since what this book provides us with is a foray into one aspect that a comprehensive ethical theory must include, in his view, if it is to be plausible. Even so, the work that he does, if one accepts hierarchy, opens up (...) many different avenues to be further pursued in animal ethics. (shrink)

The keeping of captive animals in zoos and aquariums has long been controversial. Many take freedom to be a crucial part of animal welfare and, on these grounds, criticise all forms of animal captivity as harmful to animal welfare, regardless of their provisions. Here, we analyse what it might mean for freedom to matter to welfare, distinguishing between the role of freedom as an intrinsic good, valued for its own sake and an instrumental good, its value arising from the increased (...) ability to provide other important resources. Too often, this debate is conducted through trading intuitions about what matters for animals. We argue for the need for the collection of comparative welfare data about wild and captive animals in order to settle the issue. Discovering more about the links between freedom and animal welfare will then allow for more empirically informed ethical decisions regarding captive animals. (shrink)

We submit this brief in support of the Nonhuman Rights Project’s efforts to secure habeas corpus relief for the elephant named Happy. The Supreme Court, Bronx County, declined to grant habeas corpus relief and order Happy’s transfer to an elephant sanctuary, relying, in part, on previous decisions that denied habeas relief for the NhRP’s chimpanzee clients, Kiko and Tommy. Those decisions use incompatible conceptions of ‘person’ which, when properly understood, are either philosophically inadequate or, in fact, compatible with Happy’s personhood.

Animals who live in cities must coexist with us. They are, as a result, entitled to the conditions of their flourishing. This article argues that, as the boundaries of cities and urban areas expand, the boundaries of our conception of captivity should expand too. Urbanization can undermine animals’ freedoms, hence their ability to live good lives. I draw the implications of an account of “pervasive captivity” against the background of the Capabilities Approach. I construe captivity, including that of urban animals, (...) as affecting a range of animal capabilities, understood as freedoms, and I address some tensions within Nussbaum’s treatment of human-animal conflicts. Using the Capabilities Approach as a guide, I will attempt to motivate a convergence between habitat preservation in urbanized environments, urban design guided by justice, and the individual freedoms of animals. (shrink)

I argue that most wild animals live bad lives, and that we should intervene in nature to improve their wellbeing.

Shelly Kagan has recently defended the view that it is morally worse for a human being to suffer some harm than it is for a lower animal (such as a dog or a cow) to suffer a harm that is equally severe (ceteris paribus). In this paper, I argue that this view receives rather less support from our intuitions than one might at first suppose. According to Kagan, moreover, an individual’s moral status depends partly upon her ‘modal capacities.’ In this (...) paper, I argue that the most natural strategy for justifying Kagan’s theory faces some important challenges. More generally, I argue that philosophers who wish to defend the view that human beings have a higher moral status than that of the lower animals face a dilemma. Either their theory of moral status will imply (unacceptably) that some severely cognitively impaired human beings have a significantly lower moral status than that of typical human beings, or these philosophers will be forced to ground moral status in a set of properties so far removed from a subject’s actual capacities that it will become difficult to see why these kinds of properties should have such moral importance. (shrink)

En este artículo se explica en qué consisten las éticas centradas en el sufrimiento, presenta algunas de las principales razones a su favor y expone cuáles son sus implicaciones con respecto a la consideración moral de los animales. Se argumenta que conforme a estas éticas los usos como recursos de los animales lesivos para estos deberán ser rechazados. A continuación, se examinan las posiciones que aceptan el uso de los animales siempre que este tenga lugar reduciendo los daños infligidos a (...) estos. Se presentarán una serie de razones por las que tales posiciones resultan cuestionables y por las que van a entrar en conflicto con las implicaciones de las éticas centradas en el sufrimiento. (shrink)

Some believe that it is immoral to harm animals, but it is not immoral to kill humanely raised domesticated animals. Implicit in this is the assumption that it is possible to raise and slaughter animals without harming them significantly. In recent years, a number of philosophers – DeGrazia, Harman, Bradley, and others – have claimed that slaughter harms an animal in proportion to the amount of valuable future life that an animal loses in dying, which seems to challenge this assumption. (...) But a question remains: how much are domesticated animals, particularly humanely raised ones, harmed by their slaughter? Here, I take up this question. My answer may be surprising: in ordinary circumstances, slaughter hardly deprives humanely raised animals of any good life, and so is not very harmful to them. This result may strengthen the case for humane slaughter – or it may give us reason to revise our understanding of the harmfulness of death. (shrink)

This paper addresses the issue of the moral status of non-human animals, or the question whether sentient animals are morally considerable. The arguments for and against the moral status of animals are discussed, above all the argument from marginal cases. It is argued that sentient animals have moral status based on their having interests in their experiential well-being, but that there are degrees of moral status. Two interest-based approaches are presented and discussed: DeGrazia’s view that sentient animals have interests in (...) continuing to live, and that their interests should be granted moral weight; and McMahan’s TRIA which similarly postulates that animals have interests and that in a given situation we should compare the human and animal interests at stake. Finally, the paper concludes that the anthropocentric approach to animal ethics should be abandoned in favour of the biocentric ethics. (shrink)

What is it like to be a bat? What is it like to be sick? These two questions are much closer to one another than has hitherto been acknowledged. Indeed, both raise a number of related, albeit very complex, philosophical problems. In recent years, the phenomenology of health and disease has become a major topic in bioethics and the philosophy of medicine, owing much to the work of Havi Carel (2007, 2011, 2018). Surprisingly little attention, however, has been given to (...) the phenomenology of animal health and suffering. This omission shall be remedied here, laying the groundwork for the phenomenological evaluation of animal health and suffering. (shrink)

In a recent article, Corey Wrenn argues that in order to adequately address injustices done to animals, we ought to think systemically. Her argument stems from a critique of the individualist approach I employ to resolve a moral dilemma faced by animal sanctuaries, who sometimes must harm some animals to help others. But must systemic critiques of injustice be at odds with individualist approaches? In this paper, I respond to Wrenn by showing how individualist approaches that take seriously the notion (...) of group responsibility can be deployed to solve complicated dilemmas that are products of injustice. Contra Wrenn, I argue that to adequately address injustice, acting individually, often within groups, is significantly more important than thinking systemically. (shrink)

Human beings are getting fatter and sicker. As we question what we eat and why we eat it, this book argues that living well involves consuming a raw vegan diet. With eating healthfully and eating ethically being simpler said than done, this book argues that the best solution to health, environmental, and ethical problems concerning animals is raw veganism―the human diet. The human diet is what humans are naturally designed to eat, and that is, a raw vegan diet of fruit, (...) tender leafy greens, and occasionally nuts and seeds. While veganism raises challenging questions over the ethics of consuming animal products, while also considering the environmental impact of the agriculture industry, raw veganism goes a step further and argues that consuming cooked food is also detrimental to our health and the environment. Cooking foods allows us to eat food that is not otherwise fit for human consumption and in an age that promotes eating foods in ‘moderation’ and having ‘balanced’ diets, this raises the question of why we are eating foods that should only be consumed in moderation at all, as moderation clearly implies they aren’t good for us. In addition, from an environmental perspective, the use of stoves, ovens and microwaves for cooking contributes significantly to energy consumption and cooking in general generates excessive waste of food and resources. Thus, this book maintains that living well and living a noble life, that is, good physical and moral health, requires consuming a raw vegan diet. Exploring the scientific and philosophical aspects of raw veganism, this novel book is essential reading for all interested in promoting ethical, healthful, and sustainable diets. (shrink)

In infancy, all primates require a caregiver who meets their physical needs, such as food and protection (among many others), and their affective, cognitive, and social needs (in some species, this requirement extends until the primate is a juvenile). The caregiver is essential for primate infant survival and social and cognitive development. For that reason, infants are greatly affected if they lose their caregivers; the effects of becoming an orphan range from being unable to survive to behavioral and physiological consequences (...) that last through adulthood. This entry provides an overview of relevant aspects of the study of primate orphans such as survival rates, adoption, variables in the adoption process, the effects of losing a mother, and orphans in sanctuaries. (shrink)

The performance of natural behavior is commonly used as a criterion in the determination of animal welfare. This is still true, despite many authors having demonstrated that it is not a necessary component of welfare – some natural behaviors may decrease welfare, while some unnatural behaviors increase it. Here I analyze why this idea persists, and what effects it may have. I argue that the disagreement underlying this debate on natural behavior is not one about which conditions affect welfare, but (...) a deeper conceptual disagreement about what the state of welfare actually consists of. Those advocating natural behavior typically take a “teleological” view of welfare, in which naturalness is fundamental to welfare, while opponents to the criterion usually take a “subjective” welfare concept, in which welfare consists of the subjective experience of life by the animal. I argue that as natural functioning is neither necessary nor sufficient for understanding welfare, we should move away from the natural behavior criterion to an alternative such as behavioral preferences or enjoyment. This will have effects in the way we understand and measure welfare, and particularly in how we provide for the welfare of animals in a captive setting. (shrink)

One of the biggest ethical issues in animal agriculture is that of the welfare of animals at the end of their lives, during the process of slaughter. Much work in animal welfare science is focussed on finding humane ways to transport and slaughter animals, to minimise the harm done during this process. In this paper, we take a philosophical look at what it means to perform slaughter humanely, beyond simply reducing pain and suffering during the slaughter process. In particular, we (...) will examine the issue of the harms of deprivation inflicted in ending life prematurely, as well as shape of life concerns and the ethical implications of inflicting these harms at the end of life, without the potential for future offsetting through positive experiences. We will argue that though these considerations may mean that no slaughter is in a deep sense truly ‘humane’, this should not undermine the importance of further research and development to ensure that while the practice continues, animal welfare harms are minimised as far as possible. (shrink)

Mikhalevich & Powell (2020) argue that it is wrong, both scientifically and morally, to dismiss the evidence for sentience in invertebrates. They do not offer any examples, however, of how their welfare should be considered or improved. We draw on animal welfare science to suggest some ways that would not be excessively demanding.

A review of "Fellow Creatures: Our Obligations to the Other Animals," by Christine M. Korsgaard. New York: Oxford, 2018. Pp. 271.

I examine the two-level utilitarian case for humane animal agriculture (by R. M. Hare and Gary Varner) and argue that it fails on its own terms. The case states that, at the ‘intuitive level’ of moral thinking, we can justify raising and killing animals for food, regarding them as replaceable, while treating them with respect. I show that two-level utilitarianism supports, instead, alternatives to animal agriculture. First, the case for humane animal agriculture does not follow from a commitment to two-level (...) utilitarianism combined with a commitment to respecting animal lives. Secondly, the two-level utilitarian case falls prey to a compartmentalization problem and cannot uphold both respect and replaceability. What I call ‘humane lives’ are not appropriately valued by the lights of two-level utilitarianism itself. (shrink)

Urban animals can benefit from living in cities, but this also makes them vulnerable as they increasingly depend on the advantages of urban life. This article has two aims. First, I provide a detailed analysis of the concept of captivity and explain why it matters to nonhuman animals—because and insofar as many of them have a (non-substitutable) interest in freedom. Second, I defend a surprising implication of the account—pushing the boundaries of the concept while the boundaries of cities and human (...) activities expand. I argue for the existence of the neglected problem of pervasive captivity, of which urban wildlife is an illustration. Many urban animals are confined, controlled and dependent, therefore often captive of expanding urban areas. While I argue that captivity per se is value-neutral, I draw the ethical and policy implications of harmful pervasive captivity. (shrink)

—Commentary on Mikhalevich and Powell on invertebrate minds.— Whether or not arthropods are sentient, they can have moral standing. Appeals to sentience are not necessary and retard progress in human treatment of other species, including invertebrates. Other increasingly well-documented aspects of invertebrate minds are pertinent to their welfare. Even if arthropods are not sentient, they can be agents whose goals—and therefore interests—can be frustrated. This kind of agency is sufficient for moral status and requires that we consider their welfare.

Dressing up animals in ridiculous costumes, shaming dogs on the internet, playing Big Buck Hunter at the local tavern, feeding vegan food to cats, and producing and consuming “knockout” animals, what, if anything, do these acts have in common? In this article, I develop two respect-based arguments that explain how these acts are morally problematic, even though they might not always, if ever, affect the experiential welfare of animals. While these acts are not ordinary wrongs, they are animal dignitary wrongs.

There is a widespread belief that for their own safety and for the protection of wildlife, cats should be permanently kept indoors. Against this view, I argue that cat guardians have a duty to provide their feline companions with outdoor access. The argument is based on a sophisticated hedonistic account of animal well-being that acknowledges that the performance of species-normal ethological behavior is especially pleasurable. Territorial behavior, which requires outdoor access, is a feline-normal ethological behavior, so when a cat is (...) permanently confined to the indoors, her ability to flourish is impaired. Since cat guardians have a duty not to impair the well-being of their cats, the impairment of cat flourishing via confinement signifies a moral failing. Although some cats assume significant risks and sometimes kill wild animals when roaming outdoors, these important considerations do not imply that all cats should be deprived of the opportunity to access the outdoors. Indeed, they do not, by themselves, imply that any cat should be permanently kept indoors. (shrink)

Timothy Hsiao asks a good question: Why believe animals deserve moral consideration? His answer is that we should not. He considers various other answers and finds them wanting. In this paper I consider an answer Hsiao has not yet discussed: We should accept a conservative view about how to form beliefs. And such a view will instruct us to believe that animals deserve moral consideration. I think conservatives like Hsiao do best to answer his question in a way that upholds (...) the moral status of animals. Since my answer is one Hsiao has not yet addressed, it is compatible with the main points he makes against various other motivations in his many papers on this topic. So my paper should be understood as an invitation to Hsiao to consider another answer. (shrink)

Proponents of the utilitarian animal welfare argument (AWA) for veganism maintain that it is reasonable to expect that adopting a vegan diet will decrease animal suffering. In this paper I argue otherwise. I maintain that (i) there are plausible scenarios in which refraining from meat-consumption will not decrease animal suffering; (ii) the utilitarian AWA rests on a false dilemma; and (iii) there are no reasonable grounds for the expectation that adopting a vegan diet will decrease animal suffering. The paper is (...) divided into four sections. In the first, I set out the utilitarian AWA in its original form. I give some background and I distinguish it from other, related arguments. In the second, I discuss the causal impotence objection, a popular objection to the utilitarian AWA. I explain how the objection works by means of a conceptual distinction between consumers and producers. In the third, I explain how proponents of the utilitarian AWA respond to this objection. In particular, I set out in some detail what I call the expected utility response. In the fourth and final section, I use the three objections noted above to explain why I do not find this response convincing. (shrink)

In their target article, Mikhalevich & Powell (M&P) argue that we should extend moral protection to arthropods. In this commentary, we show that there are some unforeseen obstacles to applying the sort of individualistic welfare-based ethics that M&P have in mind to certain arthropods, namely, insects. These obstacles have to do with the fact that there are often many more individuals involved in our dealings with insects than our ethical theories anticipate, and also with the fact that, in some sense, (...) some insects count as more than an individual and, in another sense, they sometimes count as less than an individual. (shrink)

This is a short introduction to animal ethics in which I present the major views in the literature concerning animal ethics and then apply these to questions such as zoos, pets and experimenting on animals. I also address the question of our obligations and duties towards animals and their relation to our obligations and duties to the environment.

This article reconstructs the theoretical premises of Tom Regan’s animal ethics, the American philosopher recently disappeared who has given a fundamental contribu-tion to this area of practical ethics, by developing a theory of rights based on the extension to all subjects-of-a-life of Kantian notions such as inherent value and respect. Regan’s theory still remains the most rigorous foundation of an animal ethics alternative to the utilitarian approach of Peter Singer, but it is not without unresolved problems or not entirely satisfactory (...) solutions. To remedy some of them, in the final part the author tries to insert into the Reganian theoretical framework elements of gradualism. (shrink)

Ethical veganism is the view that raising animals for food is an immoral practice that must be stopped because of the harm it causes to the animals, the environment, and our health. Carlo Alvaro argues the only way to stop that harm is to acquire the virtues that enable us to act justly and benevolently toward animals.

The animal liberation movement, among other goals, seeks an end to the use of animals for food. The philosophers who started the movement agree on the goal but differ in their approach: deontologists argue that rearing animals for food infringes animals’ inherent right to life. Utilitarians claim that ending the use of animals for food will result in the maximization of utility. Virtue-oriented theorists argue that using animals for food is callus, self-indulgent, and unjust, in short, it’s an unvirtuous practice. (...) Despite their different approaches, arguments for vegetarianism or veganism have a common step. They move from the notion of suffering to the conclusion of vegetarianism or veganism. In this paper I suggest that the notion of animal suffering is not necessary in order to condemn the practice of animal farming. I propose the possibility of defending vegetarianism or veganism on the basis of arguments that do not rest on the notion of animal suffering, but rather rely on aesthetic principles, the avoidance of violence, and preservation of the environment, and health. (shrink)

Scientists will soon be able to grow human-transplantable organs in pigs. This paper focuses on the question of whether it is morally permissible to eat genetically altered pigs after harvesting their organs. Despite a lack of scholarly discussion of this question, the impetus for it is straightforward. There is no reason to think that peoples’ taste for pig will subside when scientists reach the point of being able to growing mature human organs inside them. In this paper, I argue that (...) there is a good reason why we should eat genetically altered pigs and currently no compelling reasons to the contrary. (shrink)

Mather (2019) has brought together the current empirical research in support of the claim that octopuses possess minds; and the weight of the evidence does appear to support octopus sentience. Being sentient means an organism has welfare concerns, a subjective experience of life that can go well or poorly. Protecting welfare requires knowing what conditions will have a positive or negative impact. Understanding what is in the mind of an octopus will give us valuable insight into what is good for (...) an octopus. (shrink)

Animal welfare is a concept that plays a role within both our moral deliberations and the relevant areas of science. The study of animal welfare has impacts on decisions made by legislators, producers and consumers with regards to housing and treatment of animals. Our ethical deliberations in these domains need to consider our impact on animals, and the study of animal welfare provides the information that allows us to make informed decisions. This thesis focusses on taking a philosophical perspective to (...) answer the question of how we can measure the welfare of animals. Animal welfare science is an applied area of biology, aimed at measuring animal welfare. Although philosophy of animal ethics is common, philosophy focussing on animal welfare science is rare. Despite this lack, there are definitely many ways in which philosophical methods can be used to analyse the methodologies and concepts used in this science. One of the aims of the work in this thesis is to remedy this lack of attention in animal welfare. Animal welfare science is a strong emerging discipline, but there is the need for conceptual and methodological clarity and sophistication in this science if it is to play the relevant informative role for our practical and ethical decision-making. There is thus is a strong role here for philosophical analysis for this purpose. The central aim of this thesis is to provide an account of how we can measure subjective animal welfare, addressing some of the potential problems that may arise in this particular scientific endeavour. The two questions I will be answering are: what is animal welfare, and how do we measure it? Part One of the thesis looks at the subjective concept of animal welfare and its applications. In it, I argue for a subjective welfare view - that animal welfare should be understood as the subjective experience of individuals over their lifetimes - and look at how the subjective welfare concept informs our ethical decision-making in two different cases in applied animal ethics. Part Two of the thesis looks more closely at the scientific role of welfare. Understanding welfare subjectively creates unique measurement problems, due to the necessarily private nature of mental states and here I address a few of these problems, including whether subjective experience is measurable, how we might validate indicators of hidden target variables such as welfare, how we can make welfare comparisons between individual animals and how we might compare or integrate the different types of experience that make up welfare. I end with a discussion of the implications of all these problems and solutions for the practice of welfare science, and indicate useful future directions for research. (shrink)

Marino & Merskin (2019) demonstrate that sheep are more cognitively complex than typically thought. We should be cautious in interpreting the implications of these results for welfare considerations to avoid perpetuating mistaken beliefs about the moral value of intelligence as opposed to sentience. There are, however, still important ways in which this work can help improve sheeps’ lives.

The size of animal exhibits has important effects on their lives and welfare. However, most references to exhibit size only consider floor space and height dimensions, without considering the space afforded by usable features within the exhibit. In this paper, we develop two possible methods for measuring the usable space of zoo exhibits and apply these to a sample exhibit. Having a metric for usable space in place will provide a better reflection of the quality of different exhibits, and enhance (...) comparisons between exhibits. (shrink)

De-extinction is the process through which extinct species can be brought back into existence. Although these projects have the potential to cause great harm to animal welfare, discussion on issues surrounding de-extinction have focussed primarily on other issues. In this paper, I examine the potential types of welfare harm that can arise through de-extinction programs, including problems with cloning, captive rearing and re-introduction. I argue that welfare harm should be an important consideration when making decisions on de-extinction projects. Though most (...) of the proposed benefits of these projects are insufficient to outweigh the current potential welfare harm, these problems may be overcome with further development of the technology and careful selection of appropriate species as de-extinction candidates. (shrink)

The practice of ‘management euthanasia’, in which zoos kill otherwise healthy surplus animals, is a controversial one. The debate over the permissibility of the practice tends to divide along two different views in animal ethics—animal rights and animal welfare. Traditionally, those arguments against the practice have come from the animal rights camp, who see it as a violation of the rights of the animal involved. Arguments in favour come from the animal welfare perspective, who argue that as the animal does (...) not suffer, there is no harm in the practice and it is justified by its potential benefits. Here, I argue that an expansion of the welfare view, encompassing longevity and opportunities for positive welfare, give stronger considerations against management euthanasia, which then require greater benefits to justify its use. (shrink)

This paper discusses a challenge to the claims made by biocentrists and some ecocentrists that some nonsentient biological entities qualify as candidates for moral considerability. This challenge derives from Wayne Sumner’s critique of “objective theories of welfare” and, in particular, from his critique of biocentrists’ and ecocentrists’ biofunction-based accounts of the “good of their own” of nonsentient biological entities. Sumner’s critique lends support to animal ethicists’ typical skepticism regarding those accounts, by contending that they are more plausibly interpreted as accounts (...) of the perfectionist value than of the welfare of nonsentient biological entities. In response to this critique and its implication that those function-based accounts would fail to qualify nonsentient biological entities as candidates for moral considerability, it is argued that those accounts should be interpreted as ones of the health of biological entities rather than ones of their perfectionist value. It is suggested that their being bearers of health may be sufficient for nonsentient biological entities to qualify as candidates for moral considerability, such that biocentrists and ecocentrists could grant Sumner and animal ethicists’ contention that the function-based accounts of the good of their own of nonsentient biological entities are not accounts of their welfare, while not giving up on the project of defending those entities’ moral considerability. | : Cet article discute d’une objection à la thèse défendue par plusieurs biocentristes et écocentristes selon laquelle les entités biologiques non sentientes se qualifieraient comme candidates à la considérabilité morale. Cette objection découle de la critique des « théories objectives du bien-être » formulée par Wayne Sumner et, plus particulièrement, de sa critique des théories du « bien propre » défendues par les biocentristes et les écocentristes, lesquelles définissent ce bien en relation avec les concepts biologiques de fonction et de téléologie. La critique de Sumner offre un certain appui au scepticisme généralement suscité par ces théories chez les auteur-e-s oeuvrant dans le domaine de l’éthique animale, en ce qu’elle fait valoir que celles-ci sont plus plausiblement interprétées comme concernant une forme de valeur perfectionniste s’appliquant aux entités biologiques non sentientes que comme concernant leur bien-être. Cet article soutient que la manière la plus prometteuse de répondre à cette critique pour les biocentristes et les écocentristes consiste à faire valoir d’une part, que les théories du bien propre qu’elles et ils défendent doivent être interprétées comme des théories de la santé des entités biologiques plutôt que comme des théories de leur valeur perfectionniste, et d’autre part, que la possibilité pour les entités biologiques non sentientes d’être en plus ou moins bonne santé suffit à les rendre candidates à la considérabilité morale. (shrink)

Invariabilism is the view that the same theory of welfare is true of every welfare subject. Variabilism is the view that invariabilism is false. In light of how many welfare subjects there are and how greatly they differ in their natures and capacities, it is natural to suppose that variabilism is true. I argue that these considerations do not support variabilism and, indeed, that we should accept invariabilism. This has important implications: it eliminates many of the going theories of welfare (...) while making some of the remaining ones more attractive. (shrink)

It has been argued that some animals are moral subjects, that is, beings who are capable of behaving on the basis of moral motivations. In this paper, we do not challenge this claim. Instead, we presuppose its plausibility in order to explore what ethical consequences follow from it. Using the capabilities approach, we argue that beings who are moral subjects are entitled to enjoy positive opportunities for the flourishing of their moral capabilities, and that the thwarting of these capabilities entails (...) a harm that cannot be fully explained in terms of hedonistic welfare. We explore the implications of this idea for the assessment of current practices involving animals. (shrink)

This paper argues that contemporary philosophical literature on meaning in life has important implications for the debate about our obligations to non-human animals. If animal lives can be meaningful, then practices including factory farming and animal research might be morally worse than ethicists have thought. We argue for two theses about meaning in life: that the best account of meaningful lives must take intentional action to be necessary for meaning—an individual’s life has meaning if and only if the individual acts (...) intentionally in ways that contribute to finally valuable states of affairs; and that this first thesis does not entail that only human lives are meaningful. Because non-human animals can be intentional agents of a certain sort, our account yields the verdict that many animals’ lives can be meaningful. We conclude by considering the moral implications of these theses for common practices involving animals. (shrink)