If it were up to me, the cop would be given three choices.
1) Squat down and sh*t out an identical dog, to replace the one he murdered.
2) Get down on all fours, and take on the duty of being the family's pet, 24/7, for a period not to exceed a dog's average lifetime - water and Alpo being his sole source of nutrition during that time.
3) Allow himself to be decapitated, via 12 gauge.