An average dog has 300 million olfactory receptors in its nose. That is fifty times what humans have. No wonder some people believe that dogs can know what you had for breakfast.
It’s hard to picture a sense of smell more elaborate than yours but picture this. The part of the brain devoted to smell is forty times greater in dogs than in humans. Scientists have channeled this olfactory capacity to the greater good.
Here are 5 ways how detection dogs all around the world are making the world a better place.