Pitbulls are very stubborn (I have a ten month old pitbull/terrier mix) but they're as sweet as any other dog with the right training. It's all about how you raise them. When I got mine he was six months old and I don't think the previous owners had the time or patience for him because he was (and still is, for the most part) very hyper and a HUGE attention whore (you couldn't even watch TV without him sitting in front of you and whining until you played with him). He's gotten better since then, he's still pretty hyper, very stubborn and still an attention whore, but not as bad lol. I love him and I'm in the process of training him before my baby girl arrives.