Dogs love to sniff, especially during dog walking. Using their nose is often the highlight of their walks, if not dominating their entire day. Their ‘nosiness’, however, can be difficult for owners to comprehend and even, on occasion, be embarrassing. The dog nose truly is a wonderful scent apparatus, even if we don’t quite understand all of its abilities yet. 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 be important in the detection of pheromones (body scents), perhaps giving the dog its tremendous ability to identify and recognise animals and people.