Scent of the familiar: You may linger like perfume in your dog’s brain

An area of the canine brain associated with reward responds more strongly to the scents of familiar humans than it does to the scents of other humans, or even to those of familiar dogs. This is among the first brain-imaging studies of dogs responding to biological odors. When humans smell the perfume or cologne of someone they love, they may have an immediate, emotional reaction that’s not necessarily cognitive.

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