we have a bull dog pit mix smart kind gentle we treat her as one of the family never had a single problem people walk up too her in her own yard me and mt teenage sons can take food literally out of her mouth still no problem so i would have too say that a lot has too do with the owners i am not saying they are all good dogs so too speak and i am positive that if anyone tried too harm the family she would put up a good fight they are stgrong and stubborn no doubt. it seems that if they are trained well and treated properly they are good dogs.would i leave her unsupervised around small kids OH HELL NO but that can be said for all dogs.