The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Sharks have been on the planet longer than trees.
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Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
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Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
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The reindeer is the only mammal that can see UV light.
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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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Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
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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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