Yes, as far as i know. I was told the bump on a bulldogs head will actually seperate in half creating the small vertical indention down the middle/top of their head. It happened with both of mine. Savanah's was much more prominant than Brodey's and her head is alot bigger than his...so far, but he's still growing. Also the bigger the bump the farther apart the eyes (eye sockets) will be as well. food for thought...