| animals, domestic | Animals which have become adapted through breeding in captivity to a life intimately associated with man. They include animals domesticated by man to live and breed in a tame condition on farms or ranches (e.g., horses, cattle, sheep) and those raised or kept for pleasure and companionship (e.g., dogs, cats, horses). (12 Dec 1998) |
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| animals, inbred strains | Animals produced by the mating of littermates or siblings over multiple generations. The resultant strain of animals is virtually identical genotypically. Highly inbred animal lines allow the study of certain traits in a relatively pure form. (12 Dec 1998) |
| animals, suckling | Young, unweaned mammals. Refers to nursing animals whether nourished by their biological mother, foster mother, or bottle fed. (12 Dec 1998) |
| animals, transgenic | Animals, or the offspring of such animals, into which cloned genetic material has been experimentally transferred by microinjection of foreign DNA, either directly or into embryos or differentiated cell types. Transgenic rabbits, mice, fish, xenopus, sheep, pigs, and chickens have been produced using genes of sea urchins, candida, drosophila, and mice. (12 Dec 1998) |
| animals, wild | Animals considered to be wild or feral or not adapted for domestic use. It does not include wild animals in zoos for which animals, zoo is available. (12 Dec 1998) |