In a Disney animated film ”star to spite himself” (2008) we meet the dog hero from the popular series who, after learning about real life, quickly learns the principle “the look of a beaten dog”. One that all of our four-legged canine companions know how to use to get exactly what they want from us. Something to put in the fangs, most often.
From(The United States) confirms to us today that we bear full responsibility for this. Because the dog appears as the only one with whom we have established a connection through a glance. Thus, over the course of domestication history—a history going back more than 30,000 years—his best friend, people may well have selected dogs based on their ability to produce facial expressions that resemble him.
This new study uncovers key anatomical features that may explain how our dogs can adopt the famous “the look of a beaten dog”. Everything will be played on the side of the small muscles used to form facial expressions.. Ours are mostly made up of what are called fast twitch myosin fibers. This allows us to quickly form facial expressions. But without our ability to hold them for a long time.
Anatomical features to study
The facial muscles of dogs are also made up of many fast-twitch fibers. Between 66 and 95%. Wolves have much less of these fibers – about 25%. On the other hand, they have a high percentage of slow twitch fibers – 29% compared to 10% on average in dogs. More efficient fibers forlong and controlled. Fibers that don’t tire as quickly.
The fast twitch fibers our dogs use give them more facial mobility. They provide faster muscle movements. They also allow small movements such aspoll. And the short, powerful muscle contractions needed to bark. Barking, which is also used by dogs to communicate with us. Slow twitch fibers, on the other hand, are important for the sustained muscle movements that wolves use for their movements. .
Previous work has already highlightedthe presence of a mimic muscle in a dog, which a wolf does not have. A muscle that also helps create the “beaten dog look”. To learn more, researchers now want to use staining differentiate from other types of myosin fibers. And shed even more light on the anatomical differences humans have created between .
Why does your dog’s gaze make you cringe?
Dogs sometimes put on a cute expression. Such a cute look may be due to the development of certain muscles that wolves do not have. An evolutionary strategy reminiscent of the one that makes us melt in front of a baby.
Futura article from AFP-Relaxnews published 06/18/2019
ATpublished Monday in the Proceedings of the American Academy of Sciences (PNAS), the researchers explain that they dissected the cadavers of domestic dogs and from which dogs diverged about 33,000 years ago. No animals were killed for this study. Scientists have found two well-formed muscles around dogs, but not wolves.
In another part of the study, they filmed two-minute interactions betweenand a man unknown to them, then between wolves and man. Only dogs managed to make movements high intensity of looking at people. “It helps them make their eyes bigger like babies do.”Anne Burrows, a professor at Duken University in Pittsburgh and co-author of the study, told AFP. “It causes protection in people. Since the muscles were highly developed in dogs, but not in wolves, “this tells us that this muscle and its function has been chosen” people, adds Ann Burroughs.
The look that distinguishes a dog from a wolf
This study is in addition to several others, including a famous 2015 study by researchers in Japan that demonstrated that eye exchanges between dogs and their owners lead to a mutual peak in activity.Where ” love.” Just like what happens between a mother and her child.
The study, published on Monday, involved only four wolves and six. To confirm the link, it would be necessary to disassemble further. Researchers would also like to study ancient dog breeds and compare them to their current descendants, such as the Chihuahua, and study other breeds. man’s friends are like horses and cats.
How does your dog talk to you?
Articlepublished October 23, 2017
The dog emphasizes its facial expressions when a person looks at it. The statement will not surprise those who regularly meet these animals, but now a scientific experiment proves it. This is really an attempt or request for social interaction, not the effect of emotion. Without spectators, they are less talkative…
Dropped ears, puppy eyes, rolled lips: Man’s best friend could use these facial expressions to convey a message, and not just under the influence of emotions, according to a study published in. Everyone knows that very sensitive to human attention. “But our results go further, suggesting that we should interpret their facial expressions as a way of communicating.”explains AFP Julian Kaminsky from in the United Kingdom, one of the co-authors of this work.
To reach these conclusions, Juliana Kaminsky and her colleagues studied 24different, aged from one to twelve years. All were pets. The researchers filmed the dogs and their expressions by placing them one meter away from a person facing or , attentive or distracted. Result : “their facial muscles move more if the person is attentive”Juliana Kaminsky says
And “dog eyes” the expression they use most often. The comparison was made with the response to the food supply. Source of desire and emotion, the situation can cause. It’s not an option. For authors, experience shows that facial expressions do not reflect emotional state.
Dog facial expressions are an attempt to communicate
The researchers concluded that in front of people, the dog expresses more than just emotion. “The results may indicate that dogs are susceptible toand that their expressions are potentially active attempts at communication, not just emotional displays.— explains the researcher.
But it should not be inferred from this that a domestic animal assumes the form of a beaten dog in order to propitiate its owner. According to the team, this work does not confirm that dogs are aware of what a person might think or feel depending on their facial expressions. This ability to represent another’s way of thinking is calledseems to be very rare in animals and is not demonstrated in this experiment.