Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Only 3% of bird species have penises.
0
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27
Cats sleep for 70% of their lives.
8
Cats and dogs can hear ultrasound.
350