A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
World's heaviest primates: morbidly obese humans. After that: gorillas at 485 lbs.
106
Cats and dogs can hear ultrasound.
350
On average, it takes 660 days from conception for an elephant to give birth.
19
Snails breathe through their feet.
34
The most expensive cow in the world was sold in 2009 for $1.2 million.
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