It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
The oldest recorded elephant lived for 82 years.
213
When dragonflies mate, their tails form a love heart.
22