Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Goats do not have upper front teeth.
27
The praying mantis is the only insect that can turn its head!
95
Lobsters have blue blood.
476
On average, there's 300 billion neurons in the octopus brain.
129
The sloth (a mammal) moves so slowly that green algae can grow undisturbed on its fur!
104
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6