DEAR MISS MANNERS: My dog is a great conversation starter. Strangers who stop to admire him will often share a story or two about their own pets, or their own memories of dogs they’ve known. As much as I enjoy this, I’ve noticed that these strangers will often — with no prompting from me and with no obvious conversational cues leading toward this topic — tell me about how their pets or pets belonging to their friends died. These stories are often detailed accounts of how they, or someone close to them, caused the death of their beloved animals, usually by accident, leading to years of emotional fallout and sad memories. I understand that losing a pet is difficult.