[Illirmpipse]

Go talk to them, I don't know what else you want, just because it's a pit bull (maybe) doesn't mean it's dog aggressive and just because a dog isn't a bully breed doesn't mean they are dog friendly. If it makes you feel better carry some dog mace or a tazer but assuming the dog is "aggressive" because he's muscular, has cropped ears and you think his bark sounds mean is stupid as hell. My DA dog has natural ears, doesn't pull towards other dogs and doesn't make a sound, my cropped noisemaker gets along with just about everybody on the other hand. One of my neighbors just got another mastiff, she doesn't leash them and I know the first one is pretty protective but I don't worry about it, they stay by her and I don't run into their face.