Our family lost our whole flock today. We had six chickens. There is one remaining, but I do not expect her to make it. It was either a dog or a coyote. We have coyotes in the area, but I suspect it was a dog for the simple fact that it ripped hardware cloth completely off the screws and tore into the coop. I would not have thought it possible. Sad day for our kids. The coop will be a fortress when the replacements arrive in the spring. Small comfort to our second grader who treated the chickens like puppies.