The taxonomic family that includes lions, tigers, and all other cats is Felidae.
Felidae is a family in the mammalian order Carnivora. Its members, called felids, include familiar wild cats such as lions, tigers, leopards, jaguars, cheetahs, lynxes, and cougars, as well as the domestic cat. Despite enormous differences in size and habitat, felids share adaptations including muscular bodies, forward-facing eyes, specialized carnassial teeth, whiskers, and retractable claws in most species.
Living felids are generally divided into two subfamilies: Pantherinae, which includes the large cats of Panthera and the clouded leopards of Neofelis, and Felinae, which contains the remaining living cat lineages. The cheetah is classified within Felinae rather than a separate living subfamily in modern classifications.
Felidae should not be confused with Canidae, the dog family, or Hyaenidae, the hyena family. The extinct saber-toothed cats were also felids, although they belonged to extinct lineages rather than to any living cat group.