Dogs

The domestic dog (Canis lupus familiaris)[2][3] is a subspecies of the gray wolf (Canis lupus), a member of the Canidae family of the mammalian order Carnivora. The term "domestic dog" is generally used for both domesticated and feral varieties. The dog was the first domesticated animal[4] and has been the most widely kept working, hunting, and pet animal in human history. The word "dog" can also refer to the male of a canine species,[5] as opposed to the word "bitch" which refers to the female of the species.