Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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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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Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
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Jellyfish as a species are actually older than dinosaurs and sharks.
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Dogs have been man's pet for over 14,000 years.
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In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
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Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
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