Callie is definitely alpha in this household. As a kitten, she beat up on Whisper and Shadow There aren't A LOT of fights in the house; mainly her and Whisper play fight and Shadow SCREAMS if anyone messes with her. I think Callie is just the loudest of the group and gets her point known "I'm hungry." "Scratch my back." "Open the door."

She is usually the first one to eat if she is really hungry..if not, she lets Whisper eat first and Shadow is always last. She always has the top spot on the cat tree; she pretty much just gets what she wants when she wants it.

We don't have much territorial issues except with Whisper and Shadow. Callie is pretty laid back about stuff like that but Whisper has to show his dominance over Shadow every once in a while.

I'm not sure of introducing Boomer to other kitties. I wish you luck though and I'm sure everything will be fine once he gets use to everyone.