The name rhinoceros means ‘nose horn’. They are herbivores who roam grasslands and forests,eating leaves, fruits and grasses.A group of rhinoceros is called a ‘herd’ or a ‘crash’. They can live up to 40 years. They can run up to speeds of 35 miles per hour which is not enough to outrun predators and hunters. They have been around for over 50 million years but today, they are endangered species and just five species of rhinoceros are remaining in the world. Black Rhinoceros, White Rhinoceros and Indian Rhinoceros are from southern Asia and Javan Rhinoceros and Sumatran Rhinoceros are from Africa.The Black Rhinoceros, Javan Rhinoceros and Sumatran Rhinoceros are all endangered species.
A Rhino’s horn is composed of a protein called keratin. Its center contains dense deposits of melanin and calcium. The rhino can grow a new horn if it breaks off. Historically, its horn is supposed to have medical qualities. It is ground and used to treat a variety of ailments including fever, headache, gout and food poisoning.
Rhinoceros have thick but sensitive skin, which is why they like to wallow in mud because when the mud dries, it acts as protection from the sunburns and insects.An adult rhino’s skin can be as much as 5 cm (2 inches) thick, with typical range of thickness across species being 1.5-5 cm thick.They can grow over 6 feet tall in height and 11 feet in length. The white rhinoceros are the second largest land mammal. It is also the largest rhino species and can weigh over 3500 kg (7700 lb). Their pregnancies last 15 to 16 months. They have poor eyesight but good senses of smell and hearing. They mark their territories by feces. Black rhinos fight each other and have the highest rate of death among mammals in fights among the same species. Fifty percent of males and 30% of females die from these intra-species fights.