The main difference between black and white rhinos is the shape of their mouths – white rhinos have broad flat lips for grazing, whereas black rhinos have long pointed lips for eating foliage. There are two living Rhinocerotini species, the Indian rhinoceros and the Javan rhinoceros , which diverged from one another about 10 million years ago.

Rhinos are one of the few megaherbivores—plant-eaters that weigh more than 2,000 pounds—that still live in the world. They maintain the diverse African grass and woodlands on which countless other species depend.

Adults of larger species weigh 3–5 tons. Rhinoceroses are noted for their thick skin, which forms platelike folds, especially at the shoulders and thighs. All rhinos are gray or brown in colour, including the white rhinoceros, which tends to be paler than the others.

RHINO翻译：犀牛（同 rhinoceros）, 鼻子的。了解更多。

Black rhinos snort when they’re angry, make sneeze-like calls as alarms, scream if they’re scared and ‘mmwonk' when relaxed. Rhinos also communicate through their poo and urine. When rhino poo in the same place as other rhinos – an area known as a latrine – they can smell the poo and urine of other individuals, and know who's in the area.

2019年9月19日 · Rhinos are ecosystem engineers in the places where they live. For instance, grassland habitats with access to water are important for greater one-horned rhinos, and they help maintain the health of these grasslands and the waterholes in which they wallow, which enables optimal conditions for other small herbivores that share the space with them.

犀牛（Rhinocerotidae），是奇蹄目犀科的哺乳动物的总称， 现代犀牛类群有2500万年左右的演化历史，是奇蹄目中最大的类群，具有最高的生态多样性。现生犀牛的祖先在约一千六百万年前最早分化为非洲和亚欧大陆两个支系，现存的犀牛仅包括一科四属五种：分布于非洲的黑犀（Diceros bicornis）和白犀 ...

Rhinoceroses, often simply called “rhinos,” are amongst the largest of all land animals on the Earth. Because of this, they are often classified as “megafauna,” which refers to animals over 2,200 lb (1,000 kg).

Rhinos once roamed throughout Europe, Asia and Africa, and were known to early Europeans who depicted them in cave paintings. Within historical times, they were still widespread across Africa's savannas and Asia's tropical forests. But today, very few rhinos survive outside protected areas. And all five species are threatened, primarily by ...

Rhinos are one of the most endangered animals in the world. Find out more about the issues they face and what you can do to help.