Personally, I would err on the side of caution and have the shots. A few years ago, my son was camping with a friend and the friend's parents, and he was scratched by a squirrel. (Odd, I know.) His doctor was concerned because that's not normal squirrel behavior, so my son had the series of rabies shots. They're definitely not pleasant, but they could have saved his life.
How soon should you start the shots after the altercation?