1- Looks vaguely related, but it's not stubby enough, and it's ears are different 2- Nope, still ugly 3- Staffy-American bulldog cross? Staffies have the same issues, they are closely related to them, check out the dog attack statistics after they took the ban off them in UK. 4- Something like a Boxer? House pets are bred to be house pets, if you use a dog as a guard-dog or as a weapon, then ok, just don't be an idiot, you need to understand that they are artificially selected for killing. I saw a stupid woman with a Staffy, and she had a little pink collar on it, with a thin leash, the collar snapped instantly when it lunged at my dog for no reason, without provocation. It could have lunged at my little nephew or some other kid or an elderly person with a little comfort dog... the list goes on.