Humans Selectively Bred Canines to Have Puppy Dog Eyes Over Thousands of Years, Study Finds
Photo: Getty Humans selectively bred dogs thousands of years ago to achieve the perfect “puppy dog eyes,” according to a new study. The scientists behind the study say that a dog’s adoring and pleading expression, known as puppy dog eyes, has been bred into canines to give them more human-like faces. This trait to form facial expressions was likely achieved through thousands of years of selective breeding. “Throughout the domestication process, humans may have bred dogs selectively based on facial expressions that were similar to their own, and over time dog muscles could have evolved to become ‘faster,’ further benefiting communication between dogs and humans,” Professor Anne Burrows of Duquesne University in Pittsburgh told SWNS....