This may not apply here but I had a goat rip off a big chunk of hide off her side. She caught it on something very sharp but we never did find what it was. I took her to the vet. I expected him to sew it up but he didn't. I am talking about an area about one foot square that had no skin. He trimmed off the hanging skin and loose tissue and scrubbed the heck out of the open wound. Anyway, he gave her a shot of antibiotics and sent me home with a jar of antibiotic ointment. I was to apply the ointment to the open wound twice a day or so. It took a while but it all healed up. She was left with a barely noticeable scar about the size of a quarter.