Went outside to find one of my hens got killed. Throat tore out, feathers everywhere but no sign of an attacker. I have a lab/retriever 68lbs that helps protect the girls but she was not outside at the time this happened. We have a 7’ privacy fence that we keep the girls behind and they free range during the day and coop it at night with the protection of hardware clothe etc. this event happened middle of the day during high heat and clear skies. About 3-4 weeks later same thing happened. Neck tore up feathers all over but other than that nothing... now we do have ferale cats in the hood and i figured that was the culprit but a recent conversation with a chicken enthusiast stated a cat can not kill a full grown chicken... sounds a little incorrect to me but ill play devils advocate... so i recently found two hole going into the ground in my yard with openings size os a softball. They individual i spoke wIth states either a possum or a coon got my girls ... thiughts?