Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
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
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Sharks have been on the planet longer than trees.
14
A dork is a whale's penis.
327
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