I have a new outdoor casge idea for pigs! We have one of those large dog kennels(the chain link ones) about 15ft by 7 ft, and It has a covered roof. I was planning on putting small chicken wire around the edges so they cant squeze out. My question is if I left the bottom just dirt or grass would or could they dig their way out? I could put chicken wire along the bottom, but would this solve the problem? DELI