It is double wired! Chicken wire is just so chicks could not get thru bigger wire which is welded wire, with 1" staples (second wire attached after pictures were taken). I feel very confident it is dog proof. Hoping later on we will be able to let them out supervised of course, but only time will tell.If you're worried about your chicken's safety you might want to consider swapping out the chicken wire for something more sturdy, like hardware cloth. Your schnauzers will make quick work of it, and even quicker work of your chickens!