Growing up, we had a big sticker on the front door window that read, "Never mind the dog - BEWARE OF OWNER." The graphic was as if you were staring down the barrels of a double-barreled shotgun being pointed at you. We didn't have a dog, but I did have a dad with a lot of guns. The slogan always makes me think of that.

Combined with the dog graphic, the slogan here makes me think the dog's owner would do a lot worse than just peeing on something or someone!