Aliester attacked by 3 dogs

As I was at work 3.5 hrs from home, a neighbor watched my buddy for me. While in his yard, on a leash, 3 pits headed toward the neighbor boy next door to my friends home. I'm told that my lil bull terrier got between the boy and the lead pit. Once they got into it the other two joined in on my buddy. The neighbors said they had to use ridiculous amounts of force on the 3 other dogs to get them to retreat. During the struggle Aliesters face was punctured dozens of times, his eye nearly lost. The main damage was to the ear and neck. The skin was torn from the muscle from under his left ear over the back of his neck to his right ear. The wounds them selves are in range from 2"-5". The vet told me he'd have died if he were any other breed. Unfortunately the emergency vet required all of the costs upfront to put him back together and get drains in place. It's cleaned out what little there was and I borrowed what I could. I still don't know who owned the dogs although animal control says they've got the dogs under watch now. Anything to help is appreciated and a blessing, just as him still being alive (as he's my best homie). Anything beyond what he needs will be paid forward. Thank you