Let’s explore why dogs exhibit this behavior, what it means, and how to address it appropriately—especially in social settings or if the behavior becomes persistent.
Understanding a Dog’s Sense of Smell
Dogs experience the world primarily through their noses. Unlike humans, who rely largely on sight, dogs have an olfactory system that is anywhere from 10,000 to 100,000 times more sensitive than our own, according to the American Kennel Club (AKC). This makes them incredibly efficient at detecting scents—including subtle chemical signals known as pheromones.
Pheromones are naturally occurring chemicals secreted by animals (including humans) that transmit information such as:
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Identity and biological sex
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Reproductive status
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Mood or emotional state
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Health and hormonal changes
These chemical markers are most concentrated in areas like the armpits, groin, and genitals, which explains why dogs may be drawn to these specific spots.