Sloths take two weeks to digest their food.
243
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Elephants are terrified of Bees and actually have a special, distinct vocalization for “Run away the Bees are angry”
49
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
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
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25