Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
The elephant brain weighs about 6,000g.
274
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Dogs sometimes fake being sick to get attention.
26
Denmark has twice as many pigs as there are people.
66