OK for some reason these discussions irk the crap out of me. Look at it like this. A number of years ago Dobies were consider the bad breed and aggressive. The one my parents had hen I was little would let me pull it's tail roll around on it. My mom had my dressed on sunday and I wanted to go swimming in my kiddie pool. After she told me several times no I bolted out the door towards the pool. She picked me up went to spank me and the Dobie grabbed her by the wrist. Didnt draw blood and wouldnt let her spank me. She would get between me and the garbage man when he would come. Someone ended up taking her. My aunt who lived down a few yards away gae a description of the car but nothing was done after.
Forward a couple of years later. Dobie was considered a good breed and Rotties were the bad ones. Now Rotties arent bad and pits are the bad ones. I have seen aggressive shit-zus, (since I cant spell it the taco bell dogs), labs, etc. They are known to be full of energy and be agressive. The majority has to do with the owner. As with any dog it is best to get them when they are a pup and raise them how you want them to be.
Working as a garbage man I got chased by several dogs. There was a gorgeous pitbull that was by the fence. I would walk up to get he trash can and he would do the whole submit to authority by laying down. His cropped tail just a wagging. So not being scared of dogs I reached over the fence. He jumped up and licked the crap out of me. Needless to say every Tuesday morning abou 7:30 I would pet her and she would get a dog treat. I hate the fact they moved.
My lanlords husband has a pit that is nice as can be. I went to a guy who raises them. Only one was semi agressive. The rest even the older ones just wanted attention. Pitbulls are the one of the few breeds that has never tried to come after me. The worst being just mutts. Like lab and collie mixes stuff like that.