3. Dogs can Sense Any Diseases You May Have
Various studies have confirmed that dogs have the ability to detect certain diseases such as cancer through their keen sense of smell.
Some dogs can even be trained to warn epilepsy sufferers when they are about to have a seizure.
There are many different training centers opening in various parts of the world that are dedicated to training dogs to detect the subtle chemical changes in the human body that signal disease.
A dog’s ability to sense disease comes down to an ability to detect chemicals known as volatile organic compounds or VOCs. VOCs are what allows us to sense odor and though some are toxic, the term generally applies to any chemical that can get into your nose because it is a gas. While humans can detect certain potent VOCs, our limited sense of smell is no match for what dogs can do.
Depending on the breed, a dog’s sense of smell can be anywhere from 10,000 to 100,000 times stronger than a human’s. That means that a dog can pick up a scent that is up to 100,000 times weaker than any scent a human can detect.
If you translate that into terms we understand, like vision, it means that while a human can see roughly 1/3 of a mile, a dog could see just as well at a distance of 3,000 miles if his eyesight were as good, relative to our own, as his nose is! Put another way, a dog can detect a teaspoon of sugar in a million gallons of water.