So we recently built a coop and we put some month old chicks out there about 3 days ago. Well one went missing the other day and then returned. We had no clue how it got out. Just today we woke up to one of our smaller dogs eating a chick, and a bigger dog tossing a still live one around which later died. One is still missing. So we found out that the dogs have been digging under their run/coop and pulling the chickens out. They have also been scratching at the chicken netting we put up and tearing it down. What should we do do that we don't lose any more??? Please help!