As with the solution for feral cats, the solution for Aggressive Dogs is usually packaged in boxes of 20 or 50. The solution is usually of .17” or greater diameter, made mostly of lead, and is administered with an explosive propellant from a safe distance with a small rifle or handgun.
I am just a poor country boy, but that’s how we solved the problem of vicious dogs, or any other animal. All it required was the administration of 240 grains of soft lead being injected into the skull at 1400 fps. Problem solved.