My older sister has a beautiful pitt. The dog is the sweetest dog and is great with her family. BUT, the first time I met the dog I got to her house late at night due to a delayed flight. I came in through the front door (which they rarely use) and that dog was so aggressive and tried to attack me. After, it got to know me the next day, it would come up and lay on my lap. My biggest issue with this breed is that I think some owners are blinded by how sweet they are to the family and do not believe that they can quickly become aggressive and dangerous to outsiders (even ones that are non-threatening like children).