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How One Chihuahua Proved to Be a Link to the Ancient Dogs That Moved to Latin America With the Spread of Agriculture
The tiny, feisty Chihuahua is a relic of sorts. As European settlers arrived in the Americas 500 years ago, their dogs quickly replaced native canines, obliterating detectable genetic traces of ...
A study published today in the journal PLOS One found that in 12 breeds, a flat face, collapsing nostrils, and rounded ...
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