We managed to received a three week old great pyr-mixed puppy a couple weeks back, mother dog abandoned the litter...anyway, I have been needing a dog to protect the flock and little house dogs as we are loaded with predators here. I have been keeping the puppy in the coop inside a cage at night so he would get used to the chickens and they him. I keep him loose with the chickens as they free-range if I am with him during the daytime. He is now five weeks old and very rambunctuous (sp). Today he started grabbing some feathers to try to get them to play with him. I allowed it to happen as long as no blood was drawn...the chickens just jumped up away from him until he started harrassing my standard blue cochin rooster. At first, the roo threatened and then ran away but finally the puppy decided this roo was fun to play with and really started jumping at the roo. Finally, the roo spurred him enough to make the puppy, named Hagrid, yelp and run away to pout. I was so afraid the puppy or roo would get hurt but it turned out just as I had hoped it would. I am sure we may have some more encounters until Hagrid understands they are a force to be reckoned with and not play with them. I have gone through four dogs (I got them full grown)who just would not take care of the chickens but think they were "carry-out". Thankfully, I found them good homes and no chickens were lost. I am keeping my fingers crossed that Hagrid will grow up protecting them. When he is older I will let him sleep in the coop without being caged.