![]() They give birth to just one calf at a time every two to four years, and their gestation period can last up to 16 months. As large mammals, all rhinos have slow reproduction rates. Of the African rhinos, black rhinos are solitary and white rhinos are more social, often living in herds. Though it lived at the same time as the woolly mammoth, it’s less well known, and far fewer of its fossils and remains have been found. Rhinos had an ancient ancestor that lived in Siberia during the Ice Age, the woolly rhino. By doing so, they protect their skin from sun and insects and keep themselves cool. When the sun is at its hottest, they display a behaviour called wallowing-lounging and rolling around in large pits of wet mud. Rhinos mainly feed during the night and cooler hours of the day. For example, white rhinos have evolved square lips to graze on abundant grass, while black rhinos have developed pointed lips to pick leaves and plants. ![]() Their exact diet depends on their habitat. They make up five of only nine remaining megaherbivore species left on Earth. They range in size from 600-kilogram Sumatran rhinos to 3,500-kilogram white rhinos.ĭespite their large size, rhinos are herbivores-they only eat plant matter. Like fingernails, rhinoceros horns can be trimmed without discomfort or pain.ĭespite two rhino species mentioning colours (black rhino and white rhino), all rhinos are grey. Rhinoceros horn is made of keratin, the same material as human fingernails, and they grow continuously throughout a rhino’s life. Some species have one horn, while others have two. There are currently five different species of rhino-two in Africa and three in Asia. Rhinos are one of the Big Five animals popular in African safaris, but they also live in Asia and even lived in Europe in the past.
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