Dogs Know What Stress Smells Like — And Can Detect It In People

  • Dogs can sniff out stress, reveals a new study. Researchers in Ireland say the finding will help better train service and therapy dogs to make them aware of when their owner is under pressure.
  • Study authors collected sweat and breath samples from 36 people before and after they completed a difficult math problem. The participants also self-reported their stress levels both before and after the task.
  • The researchers only used samples where the person’s blood pressure and heart rate had increased. Four dogs, Treo, Fingal, Soot, and Winnie, then had to sniff out the stress samples.
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