Our Black Lab / Great Dane mix and our boxer/mastiff/ pit bull (and who knows what else) mix were both great with the chickens. The chickens were added when the dogs were adults. They knew the "leave it" command, so that's about all they heard for the 1st couple months. They didn't actually "guard" the birds. They merely shared the yard and chased all the bunnies, squirrels, & other birds away. They were decent hawk deterrents and never chased the chickens. I didn't like that they ate chicken poop and occasionally got into some chicken feed, but we never had a predator loss while the dogs were outside. Ours were mostly house pets, but they liked to spend about 4-5 hours a day outside when the weather was nice.Hors d'oeuvres aside, are Beagles good with chaykins? Been trying to narrow down breeds for a while... beside oversized sheepers, no luck so far.