When dragonflies mate, their tails form a love heart.
22
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
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
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255