Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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Dogs sometimes fake being sick to get attention.
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The cat brain weighs about 30g.
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Cows can sleep standing up, but they can only dream lying down.
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Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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