Raccoon or skunk, but you would smell the skunk. Put out a cage trap with some meat or a dead chicken and plug whatever is stupid enough to get in.

We had a dog (2 dos actually) do that, but try got more like 50 chickens... Just killing for sport. They were someone's dogs that the owner had moved and left the mutts to fend for themselves... No collars or anything like that. The next time I saw them around the chickens, it was the last time they would bother anything...

I caught the chicken killer. It was an opossum. I caught it in a Duke dog proof coon trap. I reset just in case there were more(I may keep one set from now on).

I have chickens and have used a duke dog proof for years. Actually several of them. Its great to be able to set a trap and not worry that someones pet is going to get caught. Unless they have a pet coon, lol. Leave it set and re bait every so often. Works great.

That's what I plan on doing. Can't take anymore chances.