Around here, a cop isn't going to say a thing to you except "Good shooting" unless you endangered other folks while carrying out the shooting in a reckless manner. This county has a very strict leash law, and a loose dog misbehaving in any manner -- being aggressive, turning over trashcans, just trespassing on your property -- is fair game. Back when I worked at 911, one of our most frequent calls was, "My neighbor shot my dog!" A deputy would go out and check the situation, and I never knew one to take any action at all against a shooter -- although I knew of several who arrested irate dog owners threatening the person who did the shooting.

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Pisgah