I can't trust my dog with my chickens. I'm not sure if he really wants to hurt them or just play with them, either way not an ok end result. When we had the brooder in the front room we clipped/zipped a piece of chicken wire over the top so he couldn't get to them. He would just stand there and stare at them. Right now our 6 week olds are in the basement because nights have still been below freezing. I put them in the dog crate and clipped the door shut - the dog can open the kennel latch from the outside. He will go down and stare at them but can't get to them. I have witnessed him trying to mouth their tails that stick out of the cage but he hasn't done anything more. Still would never trust him. The problem I'm finding now is that the chicks are not at all scared of him. They peck him if he gets close. I've seen him take several to the nose and one good one to the eye.