For those who have been reading, Gem is my diabetic 13 year old who was just diagnosed with heart and kidney problems. In addition to all that, she seems to have an open sore on her hind leg. Her legs are kinda bony, she has arthritis and she's lost some fur on them. So I don't know if it's just rubbing, or something else. It doesn't seem to bother her, meaning she's not licking at it or anything, but I don't know if I should be attending to it at all.