Your dog is a teenager, and like a lot of teenagers, will have strong opinions he feels the need to share with the world. Phoebe had a bout of demand barking around 13 months old. We didn’t really do much about it, and it left as quickly as it started. Her demand barks did not get her any attention or notice, and they certainly didn’t make the kids want to play with her or me to let her out of her pen/crate or the cat to come down from his tree. There’s an adolescent thread around here that might have helpful tips for you.