Quote from Adam in Lucky
Adam: Dad hasn't turned Lucky against you. The Dog just listens to him because he's the alpha male. Barry: The what? Adam: The boss. Numero uno. Lucky has to follow Dad, it's nature. Barry: Nature is an idiot. I'm number uno. Adam: In Lucky's eyes, you rank number four in this family. Barry: No way. Adam: Clearly Dad's one. Pops is an elder so that makes him two. I have a power-alliance with Pops so that puts me at three and you at four.