The vet set him home with an ointment (resortin) but it has neither alleviated his pain nor restricted the quick growth and spread of the wound/infection. It started as a small wound with a little exudate/blood (the size of an eraser head), it grew in size to a quarter then a separate dime sized wound appeared nearby. There are now three quarter sized wounds and one is spreading into his inner ear. This seems serious to me. Any advice?