Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
When dragonflies mate, their tails form a love heart.
22
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
Cats recognise the voice of their owner, but never evolved to care.
22