I was at dinner tonight with people not in the medical field; they told me about this research. I am glad I looked here first before going to search the world wide web for information.
I totally believe this. My family has a deaf dalmation. Her sense of smell is probably better than most dogs because she has compensated due to inadequate senses in another area.
In the last 8 months, I have had toe surgery twice (ingrown toenail that had to be redone), my brother had an achilles tendon rupture repaired, and my mother broke her ankle (and is diabetic).
My brother's injury happened first. Our dog would get between him and anything else and guard my brothers leg like it was his lifeline. He would sniff it constantly (probably to make sure it was not infected). Then I had two toenail surgeries. The dog would come and lick my feet, trying to keep the area uninfected.
And then my mother broke her ankle. The dog would not let try to walk; would nudge back on the bed if she sat up and put her feet on the ground.
I would take the dog for walks, and if I could not, my mother would try. The dog would not let her. She knew in each instance when each of us was hurt and wounded.
There was an article about a dog recently chewing off his owners big toe. Unbeknownst to the owner, he was diabetic. The dog is credited with saving his life because once he went to the ER he was diagnosed with DKA. He could have died and the dog knew it.
I wish there was more research into figuring out we humans could communicate with dogs better.