The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
A domestic cat can sprint at about 31 miles per hour.
274
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Cats and dogs can hear ultrasound.
350