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Pooches of the past: Extinct dog breeds

Dogs have been showing up in human history the way glitter shows up in your house: everywhere, permanently, and usually without anyone remembering how it started. They’ve hauled nets, guarded homes, ...
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These specialised teeth allowed them to crack, crush, and chew bones. 10 fearsome, deadly prehistoric dogs that roamed Earth millions of years ago

They may be closely related to today’s domestic dogs, but you certainly wouldn’t want to pet these extinct canids… Meet 10 ...