Why Dogs Sniff People: It’s Their Way of Saying Hello
Your dog’s nose holds a superpower that makes human senses seem primitive. While humans experience the world mostly through sight, dogs experience it primarily through smell.
Dogs have up to 300 million olfactory receptors, compared to about six million in humans. Even more impressive, the part of their brain dedicated to smell is roughly 40 times larger than ours, proportionally speaking.
To a dog, scent is information. Every person and animal releases chemical signals called pheromones, which contain details about their identity, emotional state, and health.
When your dog sniffs someone’s groin area, they are accessing a particularly rich source of these signals. The human body has apocrine sweat glands concentrated in areas like the armpits and groin, making those locations especially informative to a curious canine nose.
From a dog’s perspective, this is not awkward behavior.
It’s simply an introduction.
What Dogs Learn From Sniffing
When your dog investigates a person or another animal through scent, they gather a surprising amount of information.
A single sniff can reveal:
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