Penguins have a gland above their eye that turns saltwater into freshwater.
12
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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