Ants have tiny magnetic compasses in their antennae which help them navigate.
9
When you shave a guinea pig it looks like a little hippo.
19
The oldest recorded elephant lived for 82 years.
213
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The seahorse is the only fish to have a neck.
12
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4