Their natural predators include large birds of prey, canids and felids. He has also supported conservation of rare felids & canids. Its main predators include raptors, mustelids, felids, and snakes. Flehmen is performed by a wide range of mammals, including ungulates and felids. Mammals may include primates, felids and other families. Several figurines depicting ocelots and similar felids are known. Living felids fall into eight evolutionary lineages or species clades. Like many other felids, ocelots are occasionally kept as pets. Unlike many other felids, among cheetahs females tend to occupy larger areas compared to males. Some had dentition similar to felids, or modern cats, with smaller canines. Molecular phylogenetic analysis suggests that living (extant) felids fall into eight lineages (clades). Smilodon is a genus of the extinct machairodont subfamily of the felids. This is a contributor to the frequency of infanticide in carnivorous felids. For fictional large felids such as lions and tigers, see List of fictional big cats. Cat pheromones are pheromones that are used by cats and other felids for cat communication.