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 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
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On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
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The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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