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.