Rhinoceroses have thick, loose skin with little hair, stumpy, powerful legs with three toes on each foot.
Rhinoceroses eat grass, leafy twigs, and shrubs, and are solitary.
They have poor eyesight but excellent hearing and smell. In the wild they are thought to live for about 25 years, and up to 47 in captivity. The Javan rhinoceros R. sondaicus is near extinction, as is the two-horned Sumatran rhinoceros Dicerorhinus sumatrensis .