It was discovered on a space mission that a frog can throw up.
52
Minnows have teeth in their throat.
21
Cats recognise the voice of their owner, but never evolved to care.
22
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The venom of a small scorpion is much more toxic than the venom of a large scorpion.
60
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Turkey's often look up at the sky during a rainstorm. Unfortunately some have been known to drown as a result.
131
Humans and dolphins are the only species that have sex for pleasure.
61