New research suggests that over thousands of years of dog domestication, people preferred pups that could pull off that appealing, sad look. Photo: AP

How dogs learned to manipulate us with their sad puppy eyes, according to scientists

  • Pooches use the muscle to raise their eyebrows and make the babylike expression
  • That muscle is virtually absent in their ancestors, the wolves
Topic |   Science

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New research suggests that over thousands of years of dog domestication, people preferred pups that could pull off that appealing, sad look. Photo: AP
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