Beijing time on October 13 news, according to foreign media reports, in the heart of every dog, are eager to become a hero to save the owner, at the same time, we also hope that the most loyal friend of mankind can help in a critical moment. < / P > < p > the images of dogs in movies such as little tramp and lassie the spirit dog make us think that dogs living with human beings will save their owners in trouble, and they have a natural tendency of altruism. < / P > < p > Joshua van bull, co-author of the Research Report and a graduate of the University of Arizona in the United States, said that dogs are the most loyal companions of human beings, which is a widely spread story. Simply observing the event of dogs saving people does not show anything, and figuring out why they do so is the biggest challenge. < / P > < p > it’s true that keeping dogs at home is very useful, but scientists still don’t know their real motives for protecting their owners, including whether they have intimate and understanding behaviors. According to a new paper published by bull in PLoS One, dogs have enough motivation to rescue their owners in distress, especially when they know how to do it. At the same time, however, we are still puzzled by other factors that drive us to be close to heroes. < / P > < p > in order to determine the tendency of dogs to save their owners, bull and his colleagues conducted a series of experiments. The most challenging test for dogs was the “pain test”, in which the owners stayed in a big box and pretended to be in a difficult state. After training in advance, the host participating in the experiment will have a real distress signal in the box, shouting: help, help me! Dogs can save their owners by opening a door of the box, but what are their real motives? < / P > < p > according to statistics, a total of 60 dogs participated in the experiment, and none of them received any special rescue training before the experiment. The final result showed that 20 dogs (one third of the total) rescued their owners. Boolean pointed out that this is only a data result, and you will be impressed when you observe the whole experiment, which used two control tests. The dogs in the experiment participated in two control tests and one rescue test in random order. < / P > < p > in the first controlled test called “reading test”, the dog owner sits in the box and reads a magazine quietly and aloud. In this scene, 16 dogs try to enter the box to find the owner. The test result is considered as evidence that the dog does not want to be separated from the owner. < / P > < p > in a second controlled test called the “food test,” the researchers put food in a box, but there was no owner in the box. Surprisingly, 19 dogs took the initiative to open the box. Buell pointed out that the probability of dogs rescuing the owner in the box was similar to the probability of getting food from the box, indicating that dogs thought rescuing the owner was a very beneficial behavior. < / P > < p > “food test” also shows that the knowledge of how to open the box is a key factor. Dogs who learn how to open the box in the test are eight times more likely to rescue their owners in the “reading test” than other dogs. The fact that two-thirds of dogs don’t even open the box to get food indicates that not only motivation but also other factors are needed for the rescue behavior of dogs. In the “food test”, 84% of the 19 dogs that open the box will rescue their owners. As a result, most dogs want to rescue their owners, but the biggest obstacle they face is mastering how to do it. < / P > < p > during these tests, researchers monitored the dog’s stress, such as sniffing the box, whimpering, pacing, barking and yawning. Compared with reading tests, these behaviors are often observed, even in repeated tests. “In the experiment, we found that the dog can adapt to the ‘reading test’ and keep pace with its owner’s emotional state. When the owner is trapped in the box and calls for help, the dog will become calm and anxious,” Boole said In fact, this phenomenon is what researchers call “emotional contagion”, that is, the owners pass their stress on to their pets. This evidence supports the hypothesis that dogs’ motivation to get close to humans promotes rescue behavior. < / P > < p > at present, researchers speculate that dogs rescue their owners out of sympathy, but the evidence of this study is not sufficient. For example, you can imagine a dog trying to relieve its own stress, rather than trying to relieve its owner’s stress, and there are other potential motivations. More needs to be done to fully understand these obvious human behaviors of dogs. Google said the proposed media negotiation rules would put its free services in Australia at “risk”