The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57