Where did poor Baba's little eyes come from?

dog owners understand some of the dog's facial expressions. When dogs stare at you with their eyes wide open, you can't help but give them a hug or food they like. A new study of dog facial anatomy suggests that humans may have helped create this expression by favouring "poor Baba looking at you" dogs over thousands of years of evolution.
the remains of four wolves and six dogs and focused on dissecting their faces. The researchers found two notable differences - in dogs, the inner lifting muscles of the eyes that raise eyebrows are highly developed, which is rarely found in wolves; This muscle is hardly found in wolves.
, the team reported in the Proceedings of the National Academy of Sciences that the combination of the two muscles allows puppies to "impress" us with large, tearful eyes. In fact, when researchers approached dogs and tamed wolves in shelters, they showed a sad look, scientifically known as the AU101 movement, five times more frequently than wolves and more strongly than wolves.
team speculates that humans may have been more willing to take care of canines with such eyes during early evolution, perhaps because they are reminiscent of the big eyes of human babies. The next question is whether livestock like cats use the same strategy to