The black rhino and white rhino are both actually grayish in color.
A white rhino’s head alone can weigh 1000 pounds- which is why they have a hump of muscle on their head and shoulders to hold it up.
You may think rhinos are thick skinned, but their skin is actually quite sensitive to sunburn and insect bite- which is why they love to wallow in mud to cool off.
In spite of their huge size, rhinos can move pretty fast. A black rhino, when startled, can thunder along as fast as a car- around 40 miles an hour.