The Minds and Manners of Wild Animals: A Book of Personal Observations
William T. Hornaday61Art. 12. A wild creature that cannot be kept in comfortable captivity should not be kept at all; and the evils to be guarded against are cruelly small quarters, too much darkness, too much light, uncleanliness, bad odors, and bad food. A fish in a glass globe, or a live bird in a cage the size of a collar-box is a case of cruelty. Art. 13. Every captive animal that is suffering hopelessly from disease or the infirmities of old age has the right to be painlessly relieved of the burdens of life. Art. 14. Every keeper or owner of a captive wild animal who through indolence, forgetfulness or cruelty permits a wild creature in his charge to perish of cold, heat, hunger or thirst because of his negligence, is guilty of a grave misdemeanor, and he should be punished as the evidence and the rights of captive animals demand. Art. 15. An animal in captivity has a right to do all the damage to its surroundings that it can do, and it is not to be punished therefor. Art. 16. The idea that all captive wild animals are necessarily "miserable" is erroneous, because some captive animals are better fed, better protected and are more happy in captivity than similar animals are in a wild state, beset by dangers and harassed by hunger and thirst. It is the opinion of the vast majority of civilized people that there is no higher use to which a wild bird or mammal can be devoted than to place it in perfectly comfortable captivity to be seen by millions of persons who desire to make its acquaintance.

