I wrote a paper in my Animal Law class on leash laws and pitbull attack numbers were a significant aspect of my work. The percentage of pitbull attacks on children that end up being fatal are staggeringly high. After I call the sheriff and tell the neighbor to keep their dangerous animal secured, I would be totally within my rights to kill the animal if it came on my property. Anyone who wouldn't do such a thing is the irresponsible one, IMO.