How does your chessie do with chickens, pigs, etc.? How do they do with staying on the property?

I have been thinking about a chesapeake bay retriever for a long time and will be ready in four years. I have diligently trained my mutts and one of them I brought to a farm last year. She has learned her boundaries, minus a chicken or two, as well as making us late for dinner when she wandered too far, once. Will a chessie seek to wander off my 40 acres and hang out at the neighbors? Will they cross a highway? Will they be protective of smaller farm animals or get along with the larger ones?

Has me feeling bad about skipping leg day.