Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
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
Female kangaroos have three vaginas.
2
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The oldest recorded elephant lived for 82 years.
213
A lion in the wild usually makes no more than twenty kills a year.
186
Dolphins have names for one another.
18