Cats recognise the voice of their owner, but never evolved to care.
22
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
A dork is a whale's penis.
327
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Sharks have been on the planet longer than trees.
14
Cats sleep for 70% of their lives.
8