It happens so quickly that you barely have time to react. Your dog walks over, takes an unusually close sniff, and suddenly you’re wondering, “Why does my dog do that?”
It may feel awkward to us, but from your dog’s perspective, there is nothing strange about it at all.
Dogs experience much of their environment through scent. Their noses contain vastly more scent receptors than human noses, allowing them to gather information from smells that we barely notice. When a dog investigates a person, it is essentially collecting clues about who they are and what has changed around them.
Certain areas of the human body naturally produce stronger scents than others. Sweat glands, hormones, skin bacteria, and other normal biological processes all contribute to individual body odor. To a dog, those scents can provide useful information.
So when your dog suddenly becomes interested, it usually isn’t being inappropriate or trying to embarrass you. It is simply following one of its strongest natural instincts.
Dogs also use their sense of smell to learn about other animals and people. A familiar scent can help them recognize someone, while changes in scent can signal that something in their environment is different.
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