I just wanted to tell you that what he's doing is perfectly normal-Pit Bulls don't like other dogs. Most of them hate dog parks, dogs next door, dogs walking in the neighborhood, passing dogs on walks, dogs in kennels barking ect. Dog aggression is totally normal with pits. Now, don't get me wrong, there are plenty of perfectly social pit's at the dog park, but not many. When a pit first meets another dog, 2 things go through their mind-do I want to play with your, or are you a threat?-just be a cautious owner and keep him on a leash, don't let him run up to random dogs-basically don't set him up for failure (that's the biggest thing we've learned in this whole 'pit bull' process) bring other dogs over to the house and be close by in case something erupts. Our female doesn't like other dogs-so we don't introduce her to other dogs. We've tried to socialize her and she's just not having it, so we've just come to grips with that and we only allow her around other dogs in a controlled situation with us very nearby, and our hands tightly on her collar incase she decides to be a butt head and until we feel comfortable. Don't give up! Dog aggression does not equal people aggression-as long as he doesn't show any aggression to you, you'll be fine, and he will be the best friend you'll ever have.
p.s.-One other thing pit's don't like are unwelcome strangers, and trust me they know the difference! Don't let anyone sneak in and surprise you, it'll freak him out! They are protective of their family, and do not like surprise guests they've never met-unless you make it seem ok. And one other tip-do not hang a 'beware of dog' sign! if the meter man decides to open the gate and take a peek at your meeter, he might not expect your little guy whose silently creeping up to see who is in 'his' yard. Once he decides he has never met the meeter man-hopefully MR. Utility is smart enough to get out quickly! A beware of dog sign is saying you have an aggressive dog, and can be damaging if your dog acts out. Anyone entering your property uninvited will have to find out on their own to 'beware of dog'!