Observations on overpopulation of dogs and cats.
D000818:Animals; D002140:California; D002369:Castration / Q000662:veterinary; D002415:Cats / Q000502:physiology; D004285:Dogs / Q000502:physiology; D005260:Female; D007886:Legislation, Veterinary; D008098:Litter Size; D008297:Male; D011158:Population Growth; D011247:Pregnancy