Some of y'all may have read my post yesterday about my injured hen. I found her in the back yard with multiple deep and shallow wounds. My mind told me "dog" but my heart refused to believe it. Well, today I caught my dog chasing (and catching) one of my cockerels. I ran out there before there was any damage except for a few missing feathers. While I was calming down the one little roo, Rusty went after another one! I feel so betrayed! We got Rusty (Australian Shepherd) about three months ago. We have another Aussie who is 14+ years old and is wonderful with the chickens, to the point that she and the chickens all cuddle up together when its cold. Rusty has been good as gold with the chickens, but all of a sudden he is going after them. I have no way to keep him separate. My chickens free range in the back yard where the dogs live. It looks like Rusty is going to find a new home real soon.