The results of a study by Portsmouth English University: dogs have muscles around their eyes, unlike wolves, that allow them to raise their eyebrows. Ethologist Marchesini says: “With domestication we have chosen more docile animals” It was man who chosen dogs with the capacity to convey feelings through eyebrows expression. To say a study published by the Portsmouth English University in the journal of the American National Academy of Sciences (“Pnas”). The writers of the study likened 33 national dogs ‘ facial musculature to 13 of their nearest relative, the wild wolf. Thus, they discovered that the muscles around the eyes have significant differences. Differences that make it possible in dogs 8 and not in wolves) specific movements such as raising eyebrows, for example, until they take on an almost “comma” shape, creating an expression that is also typical of people when they feel sad. In brief, movements that render the dog’s eyes “recognizable” to humans and thus capable of “empathy” in us. “The eyes-the scientists say-seem bigger than children’s eyes.”
We humans were the authors of the study who, beginning with the dog’s domestication more than 33,000 years ago, directed the evolution of their expressiveness in the sign of a greater ability to communicate with us. “We also studied animal behaviour,” the scientists point out, “and we saw that when the dogs were in the presence of the human being, they raised the internal eyebrow in a few minutes with a greater intensity than the wolves.”
In nature, adaptation in the species is produced by the selective pressure. The gazelle cheetah did what the dog guy did-explains the ethologist Roberto Marchesini at Corriere della Sera-the dog-wolf connection is very near, we can say they are brothers. But since the Paleolithic man started selecting dogs, he favored the most reassuring features. It supported a pedomorphic trend in specific. That’s the most comforting and childish characteristics. For this reason, the dog barks as an adult, for instance, which the wolf is not doing, and is much more playful. In short, the man chose those dogs that were more docile, more fit for guidance, more compliant and less combative.