The Basenji dog is the only dog that is not able to bark.
4
A dork is a whale's penis.
327
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Bats sleep 18-20 hours per day.
5
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
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6