Dogs can smell when humans are stressed, study suggests

The study team collected another round of breath and sweat samples after the task was completed.In the second and final phase, the study team showed the four dogs that passed phase one the same samples they sniffed in phase one along with a sample from the same individual collected before the task and a blank.The researchers presented post-task breath and sweat samples from one person to 20 dogs along with two other blank control samples.Service dogs who assist people with mental health conditions like anxiety and post-traumatic stress disorder may benefit from these findings, Wilson said.

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