The chickens I currently have now love eating pebbles. So, I don't think that Chickens havea strict diet lmao. One of the roosters is total bad *** though. He LOVES trying to hump the turkey lol. Also, if the dog isn't accustomed to chickens, he obviously will devour them. My mom used to smack my dogs when they got close to the chickens, turkeys, ducks. The dogs learned eventually...There was a little slip up where my duck was torn to pieces though..