why do dogs lick other dogs ears?
Dogs lick other dogs' ears to determine their identity A dog's sense of smell is 100,000 to 1,000,000,000 times more sensitive than that of a human. This makes the dog's sense of smell 10,000 to 100,000 times more sensitive than that of a human. The dog's nose has about 220 million olfactory receptors, compared with 6 million in people.In addition to detecting the value of the scent of a particular scent in the air, the dog’s nose has another extremely important function. Nose hairs can detect various chemicals in the air. Dogs detect many scents, e.g. pepper, acetone, gasoline, paints, and the like, that humans can’t detect with the naked eye. Hairs in dogs do not have a protective coating that limits the absorption of these chemicals by the hair. So if you were to rub a scent into a dog’s fur, the chemicals will be absorbed deep into the hair and can be in that hair for a long time. The dog provides a safe haven for the chemicals. If you were to put a substance tha