I have to agree, be very, very cautious. I have posted several threads on my three dogs and eight chickens. with pictures, and yes, they get along quite well. However, I had noticed for years that my dogs do not mind the large banded doves that walk around the back yard with confidence, getting quite close to the dogs and their food without any problems. That encouraged me to 'go for it' with the chickens. However, I had good intentions of introducing them by hand when they were only a few days old, but didn't because I was concerned that the dogs would not recognize them as they grew older. Rather, I put the coop inside the back yard, then put the chickens outside when they were about six weeks old. This way, they could get used to each other through the wire fencing. I did not release them until they were 10 weeks old and by then they all got along fine. I got two young black stars a couple of weeks later, kept them separated from both other chickens and dogs for four weeks, then released them. Curiously, my larger dog took an unhealthy interest in both of the newcomers, trying to lick them profusely. Fortunately, no injuries but I had to let her know that this was unacceptable. Five months later, no problems.
Still -- I work at home so am here much of the time. If I leave for an extended period, I put either the larger dog in the dog run, or the chickens in the coop. Just to be on the safe side!