The Australian Fur Seal can reach up to 2.5 m in length. Adult males are heavier than the females, weighing up to 100 kg. The fur colour of Australian Fur Seals also varies between male and female, with the male being dark grey to brown with a paler underside. They have a dark mane of coarse hair over the neck and shoulders. Females can vary from pale fawn to greyish brown with a paler yellowish throat and underside. The coat of the Australian Fur Seal is made of a woolly underfur with long coarse outer hairs to trap air. This provides waterproofing and insulation for the seal, along with a layer of fat. They moult each year which means they lose their fur, replacing the old fur with new. Fur Seals have large eyes, a pointed face with whiskers and sharp teeth. The Australian Fur Seal, Arctocephalus pusillus doriferus is the largest of all the fur seals. It has a broad head, pointed snout and long backward sweeping facial vibrissae (whiskers). The body is robust and covered in thick brown layered hair except on the front and back flippers. The Australian Fur Seal is sexually dimorphic (males and females are visibly different). The males are larger than the females and when mature carry a dark mane of coarse hair. They have a set of carnivore-like teeth similar to those of a large dog or bear. Like all members of the Family Otariidae (Fur seals and sea lions) they can raise their body onto their front flippers to move around on land.