Felidae is the biological family of the cats; a member of this family is called a felid. Felids are the most strictly carnivorous of the nine mammal families in the order Carnivora. The most familiar felid is the Domestic Cat, which first became associated with humans about 10,000 years ago, but the family includes all other wild cats including the big cats. Extant felids belong to one of two subfamilies: Pantherinae (which includes the Lion, the Tiger and the Leopard), and Felinae (which incl… (More on Felidae)