Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Only 3% of bird species have penises.
0
Cats sleep for 70% of their lives.
8
Cats recognise the voice of their owner, but never evolved to care.
22
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Gorillas can catch human colds and other illnesses.
205