Rhinos have sharp hearing and a keen sense of smell but have poor eyesight. Black rhinos boast two horns, the foremost more prominent than the other. Rhino horns grow as much as three inches (eight centimeters) a year, and have been known to grow up to five feet (one and a half meters) long. Females use their horns to protect their young, while males use them to battle attackers.
The prominent horn for which rhinos are so well known has also been their downfall. Many animals have been killed for the hard, hairlike growth, which is revered for medicinal uses in China, Taiwan, Hong Kong, and Singapore. The horn is also valued in North Africa and the Middle East as an ornamental dagger handle. The black rhino once roamed most of sub-Saharan Africa, but today they are on the verge of extinction due to poaching fueled by commercial demand.
Watch this rhino running in a video I posted on YouTube. The voices are those of my two sons.
Black rhinocerosDiceros bicornis