Bats sleep 18-20 hours per day.
5
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
A scorpion can hold its breath for up to 6 days.
19
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Dogs sometimes fake being sick to get attention.
26