I realize I am coming to this chat very late but I want to give you some hope. I have 6 chickens and though my 3 year old Piper will chase down and kill a bunny or squirrel and eat it ....she has demonstrated time after time that she understands the chickens are off limits. Infact I will go further to say that she acts as their protector. If one flies over the daytime fence she lets me know, if one is making any unusual noise she comes to get me. It has become quite comical how motherly she acts to them. 4 of them she was introduced to just a few months ago as I brought home baby chicks.....so they were small enough for her to attack for many months. I just kept telling her they are special and I would even let her sniff them while holding her collar. She knows the difference between prey and protect. I would love to get a few goats but I am not certain if that would work. I am still thinking about that.