1) The blue whale is not only the largest animal in the world, but it is also thought to be the largest animal to ever have lived on the planet!  In fact, a blue whale’s heart is the size of a car, and its tongue can weigh the same as a bull elephant.

2) Most kangaroos are primarily left-handed.

3) A hippo’s skin is so thick the animals are essentially bulletproof.

4) Giraffes have the same number of bones in their necks (seven) as humans do.

5) Each zebra’s pattern of stripes is as unique to them as our fingerprints are to us.

6) Sharks do not have bones. Their internal skeletons are made entirely of cartilage.

7) Cheetahs are well known to be the fastest land animals in the world, with a top speed of around 75 miles per hour. Even more amazing, they can reach their top running speed from a standing start in just 3 seconds.