Aggressive pit bull
My pit (about 10 months old, runt of a 13 pup litter that was abandoned); she gets agressive when she thinks she's protecting. The other day she bit a man's hand (older man and last week an older man maced her) and he required stitches. I've never had a dog bit anybody before in my 52 years. I turned myself and my dog into the local Law Enforcement. She's not agressive around children and/or other animals.
What can I do?