Have you ever noticed that your dog had an aggressive attitude toward certain persons?
After recent research into the domestic field, scientists were able to confirm that dogs can smell the bad people, reading human gestures and facial expressions.
Dog knows when a person is untrustworthy.
A more complex study by Neuroscience and Biobehavioral Reviews proved that dogs can make a distinction between a decent/nice person and a bad person.
The researchers performed a very interesting experiment on many different dogs and come to a surprising conclusion. Take a look at the following video
Source: Knowledge Time
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