There are more than one million animal species on Earth!
71
Hummingbirds can weigh less than a penny!
12
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Cats recognise the voice of their owner, but never evolved to care.
22
The elephant brain weighs about 6,000g.
274
It's possible to lead a cow upstairs, but not downstairs.
50
Spiders have transparent blood.
56