Quote: This one certainly wouldn't survive a bear attack; plywood's way too thin, but bears haven't been a problem in this area as far as animals are concerned. They've taken the easy route & raid the dumpsters. The same design would work using heavier material, though. I'd be more concerned about predators if my coops weren't up off the ground. I remove the ramp when I lock everyone up for the night, and there's no other way a coon or anything in that size range could get a foot hold to work at chewing through or working the door open (I hope).