The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
17
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5