True or false?

Sharks grow around 30.000 teeth in their lifetime.

Giraffes clean their ears with their tongues.

The giant Golliath birth-eater spider can cover the head of a man.

Rats clean themselves frequently. They even wash their faces with water.

Hippos sweat a red-pink version of blood

Ostriches bury their head in the sand

The mantis shrimp has a special front arm that can heat surrounding water up to 4,700 °C (8,500 °F).

Camels don't sweat, so their humps are full of water.

Some octopuses can be poisonous.

A bird called Egyptian plover goes inside a crocodile's mouth to clean its teeth and then flies out safely.

Kangaroos can't walk backwards.

Crocodiles can't stick out their tongues.

Bulls get angry when they see the colour red.

Polar bears cover their black noses with a paw when they want to hide in the snow.