Challenge #1: AKA Heinz. The best, most trainable dog in the world. It took 4 chickens, 4 incidents, before he really figured out that he MUST NOT play with chickens until they stop playing back. He knows it now. I trust that, if exposed to a chicken, he will resist as long as his still-semi-puppy nature will allow. Think the kid and the marshmallow test. I think the chicken would have at least 15-30 minutes unmolested. Not that I'm willing to test that theory and risk another Incident.
Challenge #2: Random possum attack. One chicken down several months ago. Hasn't been back. My theory is the dogs might kill the chickens, but they also scare away predators. So that's sort of a win, right?
Challenge #3: This adorable puppy, RollyPoly. You wouldn't know he's a chicken killing machine, would you? He looks all adorable and sweet. He's cuddly and fluffy, too. And he REALLY likes to play with the chickens. Until they stop moving. Because really, they are just fluffy squeaker toys, right? Oh, man. He got in the pen with a new batch of chicks through a hole in the fence we didn't know about. It was truly awful. Our fences are so much better now. He's also starting to respond to training, so there is hope he'll calm down once he gets out of the young puppy stage.
And, for all that, we still haven't gotten our first egg. Though it is really hot here right now, and they are still a couple weeks out from normal egg producing time.