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
Sharks, like other fish, have their reproductive organs in their chests.
248
Cats recognise the voice of their owner, but never evolved to care.
22
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Bats sleep 18-20 hours per day.
5
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492