Lions have tawny, or yellowish brown, fur. They grow to a length of about 10 feet (3 m) and stand about 4 feet (1.2 m) tall. Male lions are larger than the lionesses (females), weighing as much as five men or about 550 lb (250 kg). The more slender lioness usually weighs about as much as three and a half men or 400 lb (180 kg). Adult males can be recognized by the furry mane that runs around the heads and down the neck. For some lions the mane even runs along the belly. There is no other big cat with such a dramatic difference in appearance between males and females. Both lions and lionesses have tufts on the end of their tails, something no other cat has. If you could touch a male lion's tail, you would feel a sharp bone tucked into the tail tuft. One old legend claims that lions would use the tail spur to whip themselves into a frenzy before fighting.