Rhino facts
The Rhinoceros is the second largest mammal on the face of the planet after the African elephant. These mammals have been around for millions of years, and may actually be descended from the wooly mammoth. There are five species of rhino found in the world with 3 out of the 5 species now considered to be critically endangered.
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The rhino is a herbivore and eats grasses, leaves, shoots, buds and fruits in order to gain the nutrients that it needs to grow and survive. The average rhinoceros regularly gets to about 60 years old in the wild particularly seeing as they have no real predators apart from human poachers. The rhino is also known to have a fairly small brain in comparison to their large size. They have brilliant hearing and also a keen sense of smell, but they are well known for having extremely poor eyesight. The horns of a rhinoceros are made of keratin, the same type of protein that makes up hair and fingernails. Both African species and the Sumatran Rhinoceros have two horns, while the Indian and Javan Rhinoceros have a single horn. Source1 Source2
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The White or Square-lipped Rhinoceros is, after the elephant, the most massive remaining land animal in the world, along with the Indian Rhinoceros and the hippopotamus, which are of comparable size. It has an immense body and large head, a short neck and broad chest. This rhino can exceed 3,500 kg, have a head-and-body length of 3.5–4.6 m and a shoulder height of 1.8–2 m. The record-sized White Rhinoceros was about 4,600 kg. On its snout it has two horns. The front horn is larger than the other horn and averages 90 cm in length and can reach 150 cm.Source
Contrary to its name, the white rhino is actually brownish gray in color. Its name 'white' comes as a misinterpretation of weit, an Afrikaans word meaning 'wide'.
The Black Rhinoceros
Of the two species of rhino found in Africa, the black rhino is the far more aggressive species. There are however fewer incidents of black rhino injuring people, owing to its much lower population. They attack out of fear, confusion, and panic. They will charge if they sense a threat, which occurs frequently due to their very poor eyesight. They have even been observed to charge tree trunks and termite mounds. Black Rhinos will fight each other, and they have the highest rates of mortal combat recorded for any mammal: about 50% of males and 30% of females die from combat-related injuries. Black Rhinoceros follow the same trails as elephants use to get from foraging areas to water holes. They also use smaller trails when they are browsing. They are very fast and can get up to speeds of 56 kilometres per hour (35 mph) running on their toes. Source
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Baby rhino and a teenager.
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Pair of rhinos at lake Nakuru in East Africa, Kenya.