Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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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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Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
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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.
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Penguins have a gland above their eye that turns saltwater into freshwater.
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A dork is a whale's penis.
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