The elephant brain weighs about 6,000g.
274
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
A scorpion can hold its breath for up to 6 days.
19
A 42-foot sperm whale has about 7 tons of oil in it.
209
In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Sheep, goats, octopuses, and toads have rectangular pupils.
7