The largest earthworm on record was found in South Africa and measured 22 feet.
151
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
A group of unicorns is called a blessing.
304
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
A group of pugs is called a grumble.
10
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
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