So sorry for your loss, it's a terrible experience; we've all learned the hard way1 My coop is on an old foundation; concrete outside, and concrete floor. It's great, we were lucky to have it available. All openings are hardware cloth, stapled and edged with wood screwed in. Door latches are coon proof; a bear could break in, but otherwise safe. I also used electric tape around it this year, also enclosing my run during the daytime. Mary
