Dolphins have names for one another.
18
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The elephant brain weighs about 6,000g.
274
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Whales and dolphins can't taste anything other than salt.
11
Mosquitoes don't just bite you, they also pee on you.
11