An ethicist's commentary on whether animals raised in confinement are thus happy in confinement.
Rollin
B E
BE
D000827:Animal Welfare; D000818:Animals; D000829:Animals, Domestic; D000830:Animals, Laboratory; D000835:Animals, Wild; D000836:Animals, Zoo; D004995:Ethics, Professional; D006799:Housing, Animal / Q000145:classification / Q000592:standards; D014730:Veterinary Medicine