Dogs have been man's pet for over 14,000 years.
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The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
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
The cat brain weighs about 30g.
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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18