i have 2 Jack Russells and i love my dogs but they are NOT a chicken friendly type of dog. we had an incident last spring where my male got out and got into our brooder and killed all 24 of our 4 week chicks. this can never happen again for so many reasons! we have made the dog area about as escape proof as someone could get it. we have the chicken coop an run almost impenetrable. now we are on to making a brooder that is also dog proof. tell me what you think. thanks!!! the brooder is 4' x 6' the hardware cloth is stapled, tacked, and has wood screwed over it for added strength. this area has a removable divider so i can keep the chicks in a smaller area for the first few days and then remove the divider so they can have access to the whole thing.