Stress has an odor and dogs can smell it

 

Dogs can smell stress in humans, and the study found that they can even detect it in their sweat.

An interesting study by a team of researchers from the University of South Florida, led by Dr. Gregory Berns, has found that dogs can smell when we're stressed out, and even detect it in our sweat. The researchers also found that dogs are more likely to approach people who are stressed out than those who have a neutral emotional state.

Compared to humans, Dogs has the superpower of smelling anything faster. There are big differences in body type. ''Canine'' (a pointed tooth between the incisors and premolars of a mammal, often greatly enlarged in carnivores) which have 220 million olfactory receptors, which bind the smell molecule and transfer data to the brain.


The study was conducted on 36 human volunteers who were either stressed or not stressed before interacting with the dogs. The participants were asked to put their palms on a cotton pad which had been soaked in either water or lemon juice and then place their hands under the dog's nose for three minutes while being filmed. The videos captured what happened when the dog approached them after this process and how long they sniffed at the person's palm before moving away again.