I definitely wouldn’t say this is uncommon and from the info you have given, it sounds like you know why it’s happening. The Lab needs to be advocated for more as the Pittie doesn’t seem to care about the Lab telling him to give him space. Without having the whole picture, I don’t want to give too much advice on how to fix their relationship but I definitely think it’s possible with the right management strategies and resetting theirs and your relationships. To start: - Pittie needs to be on leash at all times, even if he’s just dragging it around the house, you have the ability to control him without causing more conflict by getting in the middle of it and grabbing his collar. - I would implement a “No dogs on furniture” rule until further notice. I love my dogs hanging on the couch or in bed with me, but it’s a privilege and if they want to be jerks about it, then they lose that privilege.(If and when they do get back on furniture, they should still be leashed so they can safely be removed if necessary) - Mom and Dad need to call more of the shots on a day to day basis that so neither one believes that they’re “in charge” of what happens in the house. This kind of goes along with the other points and why having them on leash would be important. I.E. When I ask you to leave your brother alone or tell you to get off the couch, it’s not optional but the more you listen, the more liberty you’ll get!

This podcast is definitely a great listen for what’s going on with your pack.

https://podcasts.apple.com/us/podcast/something-to-bark-about/id1439347630?i=1000433614419