The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
The reindeer is the only mammal that can see UV light.
17
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
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
Jumping fleas can accelerate 50 times faster than the space shuttle.
218