An article that reminded me of our Rhodesian Ridgeback who went back to my husband on numerous occasions "sniffing", at first he was a bit irritated by this. Having heard that dogs can smell problems than what we humans are not aware of, decided to visit the doctor.

It was prostrate cancer in the very early stages, no this dog was not trained, but we listened to what he was telling us in his way. The treatment worked and my husband is eternally grateful to that dear soul @andreajane