
Originally Posted by
Bonaparte
It depends on how much the infection has progressed and how healthy your dog is (as far as how treatable it is and how well he'll recover).
MRSA is methicillin resistant staph aureus, so it is always gram negative. Your doc had no reason to mention that it was gram negative if he already knew it was staphylococcus, but I think he was comparing it to an entirely different bacterial infection which would have been harder to treat.
The difference between gram negative and gram positive involves the bacteria's cell wall structure and which antibiotics will be most effective in treating them (and some gram positive bacteria can form endospores).