I did have a possum kill one of my hens. Caught it in a hav-a-heart. I've caught 2 more since then and I live in the city. All three were caught in the last 2 yrs. I also have a little 6 lb yorkie who killed 3 juvenile possums at my last city home. Was surprised to learn possums, in the wild, only live 3 to 4 yrs. Interesting animals with very short life spans. Don't know why I seem to attract so many. Last house didn't even have chickens!