I have a hen, we call her 9 lives! when we first got our greyhound she caught her, held her down and plucked her with her paw! she survived, since then my other dog has caught her twice almost killing her, she is bald around her neck, its never grown back she looks like a burn victim, but she is a very happy hen, very broody and an excellent mother, as for the dogs, the hound ignores them now and the other 2 are learning to behave, and the chickens keep being told STAY in your bloomin paddock!!!