Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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There are approximately three chickens for every human on Earth.
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The largest breed of rabbit is the Flemish Giant.
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In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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Cats sleep for 70% of their lives.
8
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
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A cow produces around 200,000 glasses of milk in her lifetime.
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