Felidae is the cat family within the order Carnivora. There are thirty-seven species of wild cats as well as the domestic cat, a subspecies of the wildcat.

The cats are divided into three subfamilies: Acinonychinae (cheetah), Felinae (small cats), and Pantherinae (big cats).

All cats are carnivores, flexible and sharp-toothed, and have retractable claws. Most have fur markings for camouflage, and even some that in their adult state are all one color, such as the lion and cougar, are born with markings. They all have raspy tongues which aid in stripping meat from bone on their prey.