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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Sloths take two weeks to digest their food.
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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
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
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