Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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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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Sheep, goats, octopuses, and toads have rectangular pupils.
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Whales and dolphins can't taste anything other than salt.
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Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
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In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
The elephant brain weighs about 6,000g.
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Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
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