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 the "Elephant Whisperer" Lawrence Anthony died, a whole herd of elephants arrived at his house to mourn him.
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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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Denmark has twice as many pigs as there are people.
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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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A group of unicorns is called a blessing.
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Rattlesnake mating sessions have been known to last more than 22 hours.
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