Things Dogs can see that we can't

[Catherine]

I think dogs smell chemical changes in the body. That is how they detect seizures. Cancer is the same. There may be  many other diseases that they can smell. Blood sugar changes would be obvious to a dog.

We are just beginning to understand all the possibilities. So many people wouldn't trust a dog. They still see them as animals.
Why do  we not screen people for cancer in its early stages with a cancer sniffing dog. Why do invasive and expensive tests for no reason on some people and miss testing people who do have cancer.

The dog here slept on the bed with me last night and I really miss my animals. It was good of her to be so close. Dogs are  amazing creatures.