Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
Only female bees work.
20
Crocodiles swallow stones to help them dive deeper.
55
Spotted skunks do handstands before they spray.
32
In just about every species of mammal, the female lives longer than the male.
43
Black Whales are born white.
41