It is quite natural for dogs to sniff. Just as it is for humans to sneeze. This is often why they stop abruptly while on a walk to sniff a scrawny shrub or a passerby. Dogs love to sniff. Their 'nosiness' can get get quite out of control when a visitor calls by and they insistin on sniffing 'embarrasing places'. Dogs are born to sniff. The area of the canine brain that is devoted to analysing scent is 40 times greater than that of the human and dogs can identify smells at least 1,000 times better than we can! The dog’s superior sense of smell comes from 220 million olfactory receptors in its nose. Compared to the human’s paltry 5 million, it’s no wonder smell is considered to be the dog’s primary sense. When a dog sniffs, air is taken in and passes through the olfactory epithelium (nasal skin cells). These calls are also found in a special organ that dogs (and cats) possess, called the Jacobsen’s or vomeronasal organ. This organ is thought to b...