A realistic miniature model of a Smilodon, a saber-toothed cat. A stand is provided in a separate file.Smilodon is a genus of felids belonging to the extinct subfamily Machairodontinae. It is one of the best known saber-toothed predators and prehistoric mammals. Although commonly known as the saber-toothed tiger, it was not closely related to the tiger or other modern cats.