Dogs can sniff out stress on owner's breath
A scientific sniffing test at Queen's University in Belfast has revealed that dogs can smell stress in our breath and sweat.
Four dogs - pets volunteered by their owners - were trained to "choose" one of three scent canisters.
In more than 650 out of 700 trials, they successfully identified a sample of sweat or breath that had been taken from a stressed person.
The researchers hope their study, published in the journal Plos One, will help in the training of therapy dogs.
Journalist: Victoria Gill, science correspondent
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