Acinonyx is a genus within the Felidae family. The only living species of the genus, the cheetah, lives in open grasslands of Africa and Asia.
Acinonyx
Felidae is the family of mammals in the order Carnivora colloquially referred to as cats. A member of this family is also called a felid. The term "cat" refers both to felids in general and specifically to the domestic cat.
Felidae
Extended claws on a house cat
Lionesses grooming each other
Megantereon model at Natural History Museum of Basel