This is bullshit. In more than half of dog bites the breed is unknown. So that’s the end of your line of reasoning. You simply don’t know and cannot say their “nature.”

They were bred for hunting. Some people used some of them for fighting dogs years after they were first bred and used for decades as hunting dogs. Of the few that were used in fighting, dogs that bit humans were not allowed to fight and so were euthanized

Edit: abject know-nothings and science deniers downvoting me.