Lol my beardie is opposite. She is a pet rock with eyes unless she sees hornworms. Then she becomes greased lightning. Like others have said, I wouldn't worry about them thinking about dominance especially towards humans. As for intelligence, there was an article I read about reptiles where bearded dragons actually learned from each other. They taught one bearded dragon how to push a sliding door open to get to a bug on the other side. They then put a bunch of dragons in there with the one who knew how to do it and after awhile, the others learned from watching the one how to get to the bug and they did it. Now not sure if it was a actual learning or just mimicking but interesting regardless. And like Daigga said, I would be more worried about either lizard hurting itself from falling. And iguanas are known for "bolting" off. Beardies tend to just be lounge lizards.