1. Their horns are made of the same stuff as your fingernails. A rhino's horn isn't made of bone! It is made entirely of keratin, the exact same protein that makes up human hair, fingernails, and horse hooves.

2. A group of rhinos is called a "crash." When several rhinos gather together, scientists call them a crash! It is a great name because rhinos are big, heavy, and can make quite a loud rumble when running together.

3. They use mud as natural sunscreen and bug spray. Rhinos love rolling around in wet mud puddles. When the mud dries on their skin, it protects them from sunburns and keeps biting insects from stinging them!

4. Rhinos are related to horses and tapirs. Even though they look like armored prehistoric tanks, rhinos belong to a group of odd-toed mammals. Their closest living relatives are horses, donkeys, and tapirs!

5. hey have terrible eyesight but amazing hearing and smell. Rhinos can't see objects very well if they are more than 30 feet away. To make up for it, their tubular ears rotate like radar dishes, and their powerful sense of smell helps them detect danger from far away.

6. Rhinos can run surprisingly fast. Despite weighing up to 3 tons (as much as an SUV!), a white rhino can sprint at speeds up to 30 to 35 miles per hour—faster than the fastest human runner in the world!

7. Their name means "nose horn." The word rhinoceros comes from two ancient Greek words: rhino, which means nose, and ceros, which means horn!