my 88 year old father recently gnawed his index finger so badly that he factured the bone and the finger had to be amputated. he started out months ago by chewing on his bibs, shirts, towels, etc...then moved on to his fingers. the nursing home came up with some mitts with tubing attached so he would bite that instead of his fingers, but it somehow came off during the nite and he chewed his finger, like a dog a bone. how could he have not felt pain...he doesnt talk and he never cried out in pain when they were cleaning it...do they have no sense of feeling???