An elephant's tooth can weigh as much as 12 pounds.
24
There are no ants in Iceland, Antarctica, and Greenland.
78
Sharks have been on the planet longer than trees.
14
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
Ants tend to survive in a microwave because they find the coolest spot and wait!
17
Cat urine glows under a black-light!
43