Catgut comes from sheep not cats.
11
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
Mexican Jumping Beans jump because of moth larvae inside them.
29
The lifespan of mammals is about 1 and a half billion heartbeats.
127
The sloth (a mammal) moves so slowly that green algae can grow undisturbed on its fur!
104
The Kangaroo Rat can last longer without water than a camel.
233
In just about every species of mammal, the female lives longer than the male.
43
Goldfish remember better in cold water than warm water.
29