Penguins have a gland above their eye that turns saltwater into freshwater.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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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 oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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Bats sleep 18-20 hours per day.
5