The most expensive cow in the world was sold in 2009 for $1.2 million.
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Cats recognise the voice of their owner, but never evolved to care.
22
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The largest breed of rabbit is the Flemish Giant.
65