The black rhinoceros is an endangered species native to parts of Africa. Their population has declined dramatically due to poaching for their horns, which are used in Chinese medicine and for carvings. Black rhinos now number only around 2,300 total. They are solitary animals that eat woody plants and drink water at dusk and dawn. While they have no natural predators, they are vulnerable to poachers who ambush them at water holes. Conservation efforts are working to protect the remaining black rhino populations from extinction.