According to Master Bowie, dogs sniff to “gather information and say hello.” Humans have sweat glands, called apocrine glands, that release pheromones conveying details like age, sex, mood, and health. These glands are concentrated in the armpits and genitals. Since dogs can’t reach armpits easily, they investigate the crotch instead.
Dogs cannot speak, so they rely on scent to “ask questions.” Sniffing is their way of learning about another being, whether human or dog. It is their equivalent of introductions, handshakes, and greetings.
While this behavior is instinctive, it can be redirected if it makes you uncomfortable. Training techniques such as giving treats and using basic commands like sit or stay can teach your dog alternative behaviors.
