Drivers that hit people/cars who were grossly negligent (drunk, texting, etc) while driving are generally criminally negligent. If the person you hit dies it's called vehicular manslaughter, but Cad probably knows the nuance better than I. There's a big difference between a general car "accident", and one where the driver is getting a BJ and steers into oncoming traffic.
So I should be able to starve pitbulls, start walking them around people I detest in the hopes they get mauled, and then I get to walk away Scott free? If you are walking a big and/or mean dog without a leash and it attacks someone, that is 100% your fault and you should be punished accordingly. Letting your 120lb Doberman or Pitbull off the leash where it goes on to maul a child or Chihuahua is not an "accident", it's gross stupidity/negligence on your part.