Squirrels forget where they hide about half of their nuts.
698
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The largest earthworm on record was found in South Africa and measured 22 feet.
151
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
The most expensive cow in the world was sold in 2009 for $1.2 million.
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