Binturongs have thick, black fur, a long, muscular tail, and long, stiff, white whiskers. They use their prehensile tail almost like another hand; young binturongs can even hang by their tail. Binturongs grow to be up to about 5 feet (1.5 m) long. Like other civets, the binturongs use scent marks to communicate with other binturongs. In captivity, binturongs live for about 30 years.