Unless it's a very bad bite, which might require stitches, then I thought a little antibiotic ointment was fine. Keep an eye on it, and if it looks like it might be getting infected then go straight to the vet. Of course that's just me, and I've never encountered bite wounds yet. I relate it to my kids. If they had a bad scratch, that I can handle. If it's gushing blood and looks iffy then off I go to the hospital/doctor. Whatever you feel most comfortable with.