Did you ever watch ducks play football with a frog? Even better.
I trained my Red Heeler, to herd the chickens and watch over them. I only had 1/2 an acre for them to roam in, but they laid amazing eggs. I had an ornery rooster, and the dog learned that he only had to “kennel him” and the “girls” would follow to bed. It kept the critters from killing my ladies. I only lost one, and that was the trigger to the Dog guarding chicken experiment.