There are many examples of human speciesism prejudice toward their specie and neglect toward members of other species. This article will consider one example of speciesism, the keeping of animals in captivity in ZOOs. Legal norms concerning animal protection in ZOOs are described, emphasising criminal and misdemeanour charges brought up for animal negligence and/or animal torture and their euthanasia. Although the ZOO establishment and functioning, as well as animal protection within ZOO, is legally prescribed, the article affirmed Visković’s thought that (...) not even in the most prosperous societies “there is no real moral or legal discipline in keeping and exhibiting captive fauna”. Speciesism believes justifying ZOO existence will be morally and ethically reexamined. Speciesism could be found in malicious language constructions affirmed in semantical field zoological garden in the Croatian language. (shrink)