Dog sense of smell

Olfactory sensory system

The dog sense of smell is the most powerful sense of this species, the olfactory system of canines being much more complex and developed than that of humans. It is believed to be up to 10 million times as sensitive as a human's in specialized breeds. Dogs have roughly forty times more smell-sensitive receptors than humans, ranging from about 125 million to nearly 300 million in some dog breeds, such as bloodhounds. These receptors are spread over an area about the size of a pocket handkerchief. Dogs' sense of smell also includes the use of the vomeronasal organ, which is used primarily for social interactions.

This keyword could refer to multiple things. Here are some suggestions: