Penguins have a gland above their eye that turns saltwater into freshwater.
12
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
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!)
11
In Australia, there are spiders big enough to eat snakes.
20
The largest earthworm on record was found in South Africa and measured 22 feet.
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