Well, the rescue org stepped up in a big way. They're paying for the dog's treatment. He'll need stitches for the deep wound. And antibiotics. They'll have to put him under to completely groom him. He had a whole lot of stuff embedded deep in his fur. I tried scissor cutting and couldn't get near enough of it out. He was so dirty they thought his color was brown. Its actually white.
When his treatment is done and he's ready to transport, they'll send him to a no kill shelter for adoption. Really looks like the little guy's story will have a happy ending. I won't know how it ends but I'm confident he will be living his best life soon.