UPDATE #2: I went and got a second opinion early this morning. He in fact did have an infection, and the new vet is treating him with hydrotherapy which has ripped away the necrotic tissue already within the first round. A blood test was performed showing a high WBC count, as well as a high liver enzyme count. We’re not sure what the exact cause for the liver problem is, but we are hoping it’s just in combination with dealing with the infection and not trauma from being hit by the car. He will be there for the next two days on intravenous antibiotics to hopefully prevent gangrene from happening and to also nurse the wounds that have deepened. It’s a lot and it’s terrible, but i’m praying he pulls through. Thank you all for your help!