The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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Early American humans hunted car-size armadillos and used their shells for houses.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
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There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
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The ancestor of all domestic cats is the African Wild Cat which still exists today.
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