The seahorse is the only fish to have a neck.
12
Sharks, like other fish, have their reproductive organs in their chests.
248
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Ants have tiny magnetic compasses in their antennae which help them navigate.
9