Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Tigers can see 6 times better at night than humans.
305
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
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
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492