The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
A dairy cow can produce more milk when listening to music.
446
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
The cat brain weighs about 30g.
167