Rhino horns are made of keratin, the same substance that makes up our nails and hair. It has no medical properties despite being used in traditional Asian medicine.
Rhinos have fantastic hearing and a great sense of smell, but have terrible eyesight. They will struggle to spot something further than 30m away.
Rhinos love wallowing. By covering themselves with mud and letting it dry they are protecting their skin from the sun. Rhinos will rub their bodies against tree trunks and rocks to remove ectoparasites, such as ticks, which have become stuck in the dry mud on their skin.