Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
A group of kittens is called a "kindle".
10
The cat brain weighs about 30g.
167
A 42-foot sperm whale has about 7 tons of oil in it.
209
Cows can sleep standing up, but they can only dream lying down.
745
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