Dogs have a unique way of greeting each other, and it often involves sniffing each other’s rear ends. While this behavior is totally normal for dogs,

it can be somewhat awkward when your dog decides to focus on sniffing your crotch. But why do they do this?

Dogs communicate with their sense of smell, which is far more advanced than humans. With 220 million scent receptors in their noses—about 50 times more than we have—dogs

can detect odors that are undetectable to us. This keen sense of smell is how dogs explore their world and

gather important information about their surroundings, including the people they meet.