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
The cat brain weighs about 30g.
167
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132