The personality of dogs that love to shout may be exactly what we have formed

No matter Whether you are a dog owner or not, if you often hear dogs barking, it is definitely not that comfortable. Dogs bark for many reasons, and many of the reasons that cause dogs to bark are directly or indirectly related to people.

In fact, it is very likely that it is us humans who caused the dog's cry to sound like this. "The barking of dogs is actually caused by direct or indirect human actions." said Csaba Molnar, a behavioral researcher who currently works at Eötvös Eötvös University in Hungary.

Molnar's research was inspired by a simple and interesting fact, that is, barking is common among domestic dogs, but in dog centers , but extremely common. Many people have observed that wild dogs rarely bark, but Molnar and his colleagues conducted the first detailed study of this phenomenon.

There is no anatomical difference between wild dogs and domestic dogs, so Molnar speculated that dogs, which have been with humans for 50,000 years, have Catering to human needs. In such a relatively short period of time, evolution is difficult to achieve, but if Molnar is correct, then two conclusions can be determined: First, barking should be related to the dog's own state and external environmental information. Close; second, humans should be able to understand this information.

For people who are familiar with dogs, these two points are self-evident, but in fact this is not always the case. Shepherds thought they could identify their dogs' voices, but Molnar's research revealed that this was not the case.

Molnar tested his idea through a series of experiments. In one experiment, he used a procedure to classify dog ​​calls. Through statistical estimation, Molnar found that when different dogs emit warning sounds, they are similar in tone, repeatability and overtones. However, there are large individual differences in the barking sounds made by dogs when playing. Therefore, Molnar believes that dogs' warning calls are heavily interfered with by humans, while play sounds are less affected.

If it is not a physical problem, you can ignore the barking of your dog

Don't Erner's team recorded the barking of dogs under different circumstances and then played it back for people to listen to. It turns out that the witnesses can actually identify this sound, which also proves that we actually understand them. These findings supported Molnar's initial hypothesis that dogs' barking was being disrupted by humans, but this still needs further development.

Eugene Morton of the U.S. National Zoo is a zoologist and an expert on animal exchange. He said that Molnar's view was reasonable. He believed that barking was a very effective sound and could be transmitted over a long distance. It may be a side effect of the process of domesticating wolves into dogs. "Wolf pups also bark, so we may have adopted a trait that originated in the wolf's youth," Morton said.

Molnar's research needs to be further promoted. In addition to the evolution of dog barking, Molnar hopes to analyze the behaviors of different types of dogs when they bark. Characteristics, such as mastiffs making scary low roars when visiting the home. If the barks of various dogs can be matched with their occupations, it would further support the idea that humans led the evolution of dog barks.

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