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
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Cats and dogs can hear ultrasound.
350
A group of kittens is called a "kindle".
10
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Cats recognise the voice of their owner, but never evolved to care.
22