 There have been cases where burglars have robbed homes by pretending to be officers with a no-knock warrant.There have been many cases where armed homeowners, believing that they are being invaded, have shot at officers, resulting in deaths on both sides.While it is legal to shoot a homeowner's dog when an officer fears for their life, there have been numerous high-profile cases in which family pets lacking the size, strength, or demeanor to attack officers have been shot, greatly increasing the risk of additional casualties in neighboring houses via overpenetrating bullets.