Dogs’ drug and explosive detection capabilities are better known, and new research shows that dogs can smell stress from human sweat and breathing. Each of them reported their stress levels before and after the task, and the researchers used only samples of increased blood pressu

Dogs' drug and explosive detection capabilities are better known, and new research shows that dogs can smell stress from human sweat and breathing.

According to scientists, this skill is useful when training service dogs and treating dogs.

Researchers collected sweat and breathing samples from 36 people before and after doing a math problem.

Each of them reported their stress levels before and after the task, and the researchers used only samples of increased blood pressure and heart rate.

When the sample is seen, all four dogs - Treo, Fingal, Soot and Winnie - are able to correctly identify pressure specimens.

Doctoral student Clara, School of Psychology, Queen's University of Belfast, UK "The results show that we humans produce different odors through sweat and breathing when stressed, and dogs can distinguish them from the odor we relax when we relax -- even people they don't know."

" The study stressed that dogs do not need visual or auditory cues to detect stress in humans. "

" This is the first study of this kind, which provides evidence that dogs can smell stress only from breathing and sweat, which can be useful when training service dogs and treating dogs. "

" This also helps to better understand the relationship between humans and dogs and increases our understanding of how dogs understand and interact with human mental states. "

" One of the super olfactory dogs who participated in the study was Treo, a two-year-old cocker spaniel.

its owner Helen Parks said: "As the owner of a dog who lives with smell, we were happy and curious to see Treo participate in the study. "

" Every week we go to pick it up, we can't wait to know the results. "

" It was always very excited to see the researchers at Queen's University and were able to find their way to the lab by themselves. "

" This study made us more aware of dog use The ability to 'look' the world with the nose. "

" We believe this study really cultivates Treo's ability to perceive emotional changes at home. "

" This study gave us a further recognition that dogs are highly sensitive and intuitively keen animals, and that there is great value to leverage what they do best - the sense of smell. "

In this study, dogs were taught how to search for odor sequences and remind researchers to pay attention to the correct sample.

then introduces a sample of stress and relaxation, but at this stage the researchers don't know if the dogs can spot the difference in odor.

In each test session, each dog was given a sample of relaxation and stress from a person, which were only four minutes apart.

All dogs are able to correctly remind researchers to pay attention to everyone's stress samples.

The results of this study were published in the journal Plos One.