My girl Penny has a fairly large wound (2 1/2 in square where the skin was removed) from surgery. It has been several weeks now and it is still not dried up. The vet said that it is not unusual for a wound like hers to take a while to heal. Twice daily I clean the wound and apply silvadine cream. I recently added benedryl to the regime, as suggested by the vet. Does anyone know of something else that might help? Thanks.