Rule #4: Be sure of your target and what lies beyond it.

The officer who escorted Steele to her home reportedly tried to break up the altercation, and while he was attempting to intervene, the family’s dog reportedly approached. The officer allegedly felt threatened by the dog and pulled out his gun to shoot it. As he fired shots at the dog, one of them reportedly hit the 34-year-old mother in the chest.

I would think the charge should be involuntary manslaughter or the local equivalent, but I'll not hold my breath.