I got mixed opinions on pitbulls.....but they weren't bred as a "pet" dog. I've had pitbulls charged at me few times and I knew someone who had a pit bull that ripped her upper lip off despite of she got him as a puppy and had him for 4 years with no issues. I don't think I ever got bitten by any labs. The pitbulls are powerful breed for the specific reason and it's hard to breed out these unwanted traits that they were bred for.