A rodent's teeth never stop growing.
16
The technical term for a cat’s hairball is a “bezoar.”
117
Cat urine glows under a black-light!
43
The lungfish can live out of water for three years in a state of suspended animation.
48
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
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