Probably just you or something you did. Pitbulls aside from all the lies posted about them are generally quite sweet and loving dogs. I know a whole lot of people who can call pitbulls part of their family and have never once been worried about anything bad happening to me when I am around them (aside from being licked a lot and having sleeping troubles on the couch because they take up a good deal of space while cuddling)

I have been around dogs, I got bitten once many years ago and my goals haven't been reevaluated because the dog was protecting their self and their family. I didn't know what the heck I was doing so I approached quickly and well you have been told the rest. It was an error I made not the fault of the dog. I could blame the dog because it would be easier to do that. In most situations it is easier to blame someone else. However it is just bad practice and doesn't help anyone.

However sometimes the people who are supposed to care for the dog do a **** job. That is why using your water bottle as a sprayer is a better idea. You spray the dog with water and then get out of the situation. Your goal in all self defense situations is to get away quickly and to a safe space. The idea is not to put yourself or others in more harms way and pepper spray can do that. Depending on wind and other conditions that stuff could turn bad for you or those around you. It could also end up harming the dog which could create other problems.