There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Rattlesnake mating sessions have been known to last more than 22 hours.
232
A group of kittens is called a "kindle".
10
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
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