During the midday hours, they typically exhibit less activity. Black rhinos are most active in the morning and evening when they travel, feed, and drink. Members of these groups travel and feed together. In addition, females occasionally form temporary social units. The territories of these groups often overlap. Female rhinos, on the other hand, form small groups together with their young. Males typically live alone before mating. They are not very territorial and often intersect other rhino territories. They tend to live in the same area throughout their lives. An excellent sense of smell alerts rhinos to the presence of predators.īlack rhinos are generally solitary and sedentary creatures. Their ears have a relatively wide rotational range to detect sounds. However, studies have shown that their eyesight is comparatively good, at about the level of a rabbit. It is commonly assumed that Black rhinos have poor eyesight, relying more on hearing and smell. The thick-layered skin helps to protect Black rhinos from thorns and sharp grasses. The Black rhinoceros can also be distinguished from the White rhinoceros by its size, smaller skull, and ears and by the position of the head, which is held higher than the white rhinoceros, since the black rhinoceros is a browser and not a grazer. The Black rhino has a pointed and prehensile upper lip, which it uses to grasp leaves and twigs when feeding, whereas the white rhinoceros has square lips used for eating grass. Their two horns on the skull are made of keratin with the larger front horn typically 50 cm (20 in) long, exceptionally up to 140 cm (55 in). An adult Black rhinoceros stands 140-180 cm (55-71 in) high at the shoulder and is 3-3.75 m (9.8-12.3 ft) in length.
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