Animal welfare 122 Moral and ethical aspects 54 Animal rights 40 Human-animal relationships 39 History 16 Social aspects 15 Animals 12 more ... Animal experimentation 10 Philosophy 8 Animal welfare in literature 7 History and criticism 7 Animals in literature 6 Dogs 6 Human-animal relationships in literature 6 Law and legislation 6 Laboratory animals 5 Livestock 5 Animals and civilization 4 Factory farms 4 Psychological aspects 4 Research 4 Animal industry 3 Animal rights movement 3 Consciousness in animals 3 Environmental ethics 3 Feminist theory 3 Slaughtering and slaughter-houses 3 Vegetarianism 3 Wildlife conservation 3 Zoos 3 less ...