Briefmarken des Themas Nashörner

The rhinoceros is characterized by its large size, with all of the species able to reach one tonne or more in weight. The main difference between black and white rhinos is the shape of the mouth. They generally eat leafy material, although their ability to ferment food in their hindgut allows them to subsist on more fibrous plant matter, if necessary. Adult rhinoceros have few natural predators, though young rhino can fall prey to predators such as big cats, crocodiles, wild dogs, and hyenas. Many species are under threat of extinction as a result of hunting by man, mostly because in some cultures the horn of the rhino is highly-prized for ornamental or medicinal purposes.