Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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When you shave a guinea pig it looks like a little hippo.
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Squirrels forget where they hide about half of their nuts.
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In order to enhance the taste, Japanese macaque wash their food in salt water before they eat. They also make snowballs for fun!
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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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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
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