There's a brindle one in the village - ex military/police and it's a liability, and has bitten. They're lucky to still have it tbh.
I'd never have a dog that bit anyone, totally unacceptable, like I posted Sabor would mouth me but only gently in playing he could have done damage but never did. He was really well socialised from 14 weeks old when I got him and after his jabs went down the pub, on busses and trains just the perfect 'wooloff' and like I said we have 6 grand daughters (we've got 5 great grandkids now too) so a biting hound was not an option, in fact the only dog that ever bit me was my aunts Yorkshire Terrior (a nasty little begger) that nearly killed me (Septacimea)
My former neighbour had a Staffy that was a bit of a pain but she played with me just like she played with Scott but then if you're not afraid of a dog they know and don't even try, Ruby was OK with me and Scott's mate John but could growl and be aggressive with other people but it is a 'pack' thing with dogs, if you are dominant they recognise it and behave themselves.
Some say it's pheromones but dogs can sense if you are scared and will then try to be dominant but if you aren't frightened by them they accept it...................no such thing as a bad dog, just bad owners