Heheh. We have two labs, and the older female (see picture <--) is the alpha over the 2 year younger much larger male. She is the sweetest dog to us, but rules undisputed, and unchallenged. Even the cats respect and love her. She used to break up their fights with a single "woof".

Only the parrot refuses to see things her way, even though he weighs about 1/200th. In return, she ignores his existence, but loves hanging around the cage. Parrots are messy eaters, but clever as well. He actually throws food on the floor for her to chase. He even calls her by name, and tries to order her around ("sit!" "move over!" "basket!"), but luckily she is deaf now at 13 years old.

The interactions are a constant source of amusement.