Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Denmark has twice as many pigs as there are people.
66
A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
A scorpion can hold its breath for up to 6 days.
19
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12