The forefeet and hindfeet usually bear four and five digits respectively. Digits are armed with sharp claws. The claws in extended and retracted position are given in Fig 12.3 and 12.4. Some carnivores possess retractile claws, whereas, others have non-retractile or semi-retractile claws. Most members have odorous skin glands. Some carnivores walk on soles of their feet called plantigrades (e.g. bears), while other species walk on their toes called digitigrades (e.g. dogs). Sweat glands are restricted to their pads of the feet. The male copulatory organ of many carnivores have an elongated bony structure called the baculum (os penis). Most members in this order lead a solitary life except in breeding season. In the wild, these animals are spread over a large area. The order Carnivora contains two super-families and each super-family has four families.