Congo gets free rein if we are outside of civilization (at least 5 to 10 miles) and he does very well unless he sees another animal. I live in the desert so we can usually keep an eye on him for long distances. I use an elk cow call to call him back. I use that rather than a whistle because the place where I take him has lots of dog owners with whistles.
If I ever switch food for any reason–it's gradual. When a food is switched quickly, it can cause stomach upset, loose stools, etc.....I would get her regular food back.
Love your video. It makes me kind of sad that we cannot have another B for our Champ. I know he would absolutly love the company and the playmate. So that's the nipping he's been craving for. My poor little fellow dosen't understand why his human family dosen't play the way he's suppose to play. Welcome to the forum and thanks for sharing your beautiful B's.