We keep goats, chickens, donkeys, pigs, rabbits and assorted other livestock. Our collies and corgi were raised with them, no big deal. Tuck and Coco, the Mastiffs came to us via rescue as adults. They have very little interest the larger animals. In fact, they jump into the goat pastures regularly, just to hang out. I think they tried to chase our maled donkey once, but when he'd had enough and aimed a few well timed hind hooves in their direction, they shook hands and made friends. Now they all work together on coyote patrol. I have to watch them around the rabbits, but they are totally over the chickens.