It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
The oldest recorded elephant lived for 82 years.
213
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12