Pumas are large, secretive cats. They are also commonly known as cougars and mountain lions, and are able to reach larger sizes than some other "big" cat individuals. Despite their large size, they are thought to be more closely related to smaller feline species. The seven subspecies of pumas all have similar characteristics, but tend to vary in color and size. Pumas are thought to be one of the most adaptable of felines on the American continents, because they are found in a variety of different habitats, unlike other various cat species.