Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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Sharks, like other fish, have their reproductive organs in their chests.
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A group of pugs is called a grumble.
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The largest breed of rabbit is the Flemish Giant.
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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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