20 Animals facts you don't know about.

1:A poll by the television show Animal Planet listed vampire bats as the third-most feared animal on the planet, right after wolves and gorillas and just ahead of piranhas. 

2:The sloth bear has the shaggiest fur. The sun bear has the shortest fur so it can keep cool in the hot forests of Southeast Asia. 

3:The term “dog days of summer” was coined by the ancient Greeks and Romans to describe the hottest days of summer that coincided with the rising of the Dog Star, Sirius

4:The giant squid has the largest eyes in the world.

5:A bull shark can live in both salt and fresh water by regulating salt and other substances in its blood. A bull shark may have been responsible for a 1916 shark attack that happened in a creek in New Jersey. They have also been found in the Mississippi River

6:The fastest underwater swimming bird is the Gentoo Penguin, able to swim up to 22 mph (36 km/h)

7:A polar bear’s fur ranges in color from ivory to pale tan. Underneath its fur coat, the polar bear’s skin is black to help absorb heat from the sun

Although a giant panda’s fur looks silky and soft, it is quite thick and wiry. 

8:The hair of an adult giant panda can grow up to 4 inches (10 cm) long

A horse hoof is extremely complex and sensitive. When a horse puts pressure on its hoof, the blood is squeezed up the leg into the veins, thus acting as a type of pump

The Koala bear is not really a bear, but is really related to the kangaroo and the wombat.

9:Jellyfish are harvested for collagen, which is used in a variety ways, including treating rheumatoid arthritis

10:The Koala bear is not really a bear, but is really related to the kangaroo and the wombat.