A 4-foot walrus penis bone sold at auction in 2007 for $8,000.
202
Rattlesnake mating sessions have been known to last more than 22 hours.
232
To escape the grip of a crocodile's jaws, push your thumbs into its eyeballs. It will let you go instantly.
155
Honeybees have a type of hair on their eyes!
22
A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
52
Snails breathe through their feet.
34
At one 'feeding', a mosquito can absorb one and a half times its own weight in blood.
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