dog, (Canis lupus familiaris), domestic mammal of the family Canidae (order Carnivora). It is a subspecies of the gray wolf (Canis lupus) and is related to foxes and jackals. The dog is one of the two most ubiquitous and most popular domestic animals in the world (the cat is the other).
Learn about different dog breeds, including health and care information, from the vets and pet experts at PetMD.
AKC.org offers information on dog breeds, dog ownership, dog training, health, nutrition, exercise & grooming, registering your dog, AKC competition events and affiliated clubs to help you discover more things to enjoy with your dog.