All the dogs identified the individual's strain sample and were able to tell the researchers.

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dogs can detect stress in humans through sweat and breath.

This study was carried out by Clara Wilson (PhD researcher) and Kerry Campbell (MSc student) in the School of Psychology.

This research has been published in PLOS ONE.

The study involved four Belfast dogs – Treo, Fingle, Soot and Winnie, and 36 people.

The researchers collected sweat and breath samples from the participants.

After that he was given to solve difficult math problems.

They self-reported their stress levels before and after the task, and the researchers only used samples where the person's blood pressure and heart rate were elevated.

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The dogs were taught how to spot a scent line-up and alert the researchers to the correct sample.

Each dog was given an individual relaxed and stressed samples.

All the dogs identified the individual's strain sample and were able to tell the researchers.

"The findings suggest that when we are stressed, our sweat and breath produce distinct odors," said Clara Wilson, PhD student at the Queen's School of Psychology. Huh. 

This is the first study of its kind and provides evidence that dogs can smell stress from breath and sweat alone.

This study has made dogs more aware of their ability to "see" and use their "nose".

Studies have proved that dogs are highly sensitive and intuitive animals.

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