Small cats, including the domestic cat, belong to the genus Felis. The domestic cat is Felis domesticus. Larger cats belong to the genus Panthera; the lion is Panthera leo. All cats belong to the Family Felidae, in the Order Carnivora, Class Mammalia
Cats belong to the family Felidae. Domestic cats are felis catus, while lions, tigers, and leopards belong to felis panthera and so on. Species that belong to the family Felidae are commonly called felines.