It’s estimated a dog’s sense of smell is 10,000 to 100,000 times more powerful than humans, meaning some breeds can detect a substance at a concentration of one-billionth of a teaspoon. It’s estimated a dog’s sense of smell is 10,000 to 100,000 times more powerful than humans, meaning some breeds can detect a substance at a concentration of one-billionth of a teaspoon.
Does cancer have an odor? Pet owners tell amazing stories of dogs sniffing out disease and saving their lives
