We had our 8 pullets out in their coop/run. They are a month old. The dogs have done great with ignoring them. We've left and left the dogs outside and they've left them alone, until today. We were home but had left our 'guard dog' (he does not like anyone other than us) outside because my son had a friend over. My husband had just checked on the chicks a couple of hours before. The dog went to an area that the fence wasn't the strongest (it was more of a temporary run, we are going to put in a better one in a couple of weeks) and somehow managed to disconnect it from the fence and let them out THEN killed 3 of them, severly injured one and I can't tell if the other 4 are injured or just scared to death. I had to help one pass and it didn't go as smoothly as I would have like. Now he's going back over to the coop (we've closed them off in the coop w/a light until the new run is built) and digging at the door and then went over to where he damaged the fence and tried going into the run. Is he now never going to leave them alone?! He just killed them. Didn't play with them, there were NO feathers anywhere, the only way I could even tell what he did was the injured one had blood on her but none of the others did. He was sitting in the driveway when I went to let him back in. He had stopped and left the others alive for whatever reason.