Um, dogs do not need an alpha. That's VERY OLD DEBUNKED theory created from a study about wolves in captivity. No reputable animal behavioralist will tell you that. If you're watching Cesar Milan and believing what he says then I feel bad for your pets, since he's entirely uneducated and often harms animals more than helps them. Hence why EVERY animal group in the U.S. has denounced his methods.

Regarding the OP's question: my dogs live here. You don't. My dogs provide my unconditional love and support. You don't. Find somewhere else to sit. (That said, my dogs are pretty amiable and will move if you tell them to scoot over.)