Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
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Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
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Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
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A domestic cat can sprint at about 31 miles per hour.
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The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8