My pug keeps attacking my english bulldog. What should I do?

My pug is 2 years old and my english bulldog is 8. They are both male. They fight non-stop. I'm scared that they are going to hurt each other. I have no idea of what to do. When we have company they go at it, when it's time to eat they go at it. They just don't get along. My husband sits in the living room with our bulldog while I keep our pug in the bedroom with the kiddie gate up. It's getting pretty annoying. We don't want to get rid of either of them. Oh and our English bulldog is fixed but out pug is not. I've thought about getting a thunder shirt for my pug but I don't know if it will help. What do you think I should do?