Amazing Animals: Rhinoceros Quiz

The five species of rhinoceros are found throughout Africa and Asia.

The 90 percent decline in the world rhino population is due largely to poaching.

Rhino horns are made of keratin, the same protein that comprises your hair and nails.

The black rhino and white rhino of Africa and the Sumatran rhino of Asia all have a large horn at the front of their nose and a smaller horn behind.

The poor vision of rhinos is probably the reason for their unprovoked attacks.

Rhino horns can grow to be 5 feet (1.5 meters) long.

Despite their size, rhinos can reach speeds of up to 40 mph (64 kph).

Because they have few enemies other than humans, rhinos can live almost 50 years in the wild.

The animals' name comes from the Greek rhino, meaning "nose," and ceros, meaning "horn."

Rhinos are nearsighted and can't see well beyond 90 feet (27 meters) in front of them.