Help for Bo attacked by pitbull

I added a new picture of Bo for everyone to see his sweet face with this severe injury.My name is Kelley I'm s senior citizen today my small terrier was attacked by a pit bull who did not live in our mobile home park. He has been told not to come in here. Today I was walking my dogs he was in our park lost control of his pitbull who went straight unprovoked for my dogs neck. I've paid $6800 so far. Update on Bo, he had surgery for muscles shredded in his shoulder. He's home recuperating. He'll need physical therapy but he actually walked a little bit this weekend! Which is good progress. He has a checkup appointment this afternoon. Thank you to everyone who donated and cared about Bo. He's a sweet soulful lil guy with a big will to live!