I don't have an SO yet, but I do live with my family so the questions still kind of apply! And I like threads that answer questions lol.
I consider Dance and Journ to be mine, and Ripley might as well be also. I am their main caretaker, always buy anything the girls need and usually buy all of Ripley's needs too, they all sleep in my room, etc. That said, I consider Rip to be more of the 'family dog' now. Although if you asked him, he's been mine since he was like 7 weeks old.
I'm kind of a control freak with the dogs. I worry if my mom wants to take them for a walk or something. Not so much the girls, but Ripley can be leash reactive, so I needlessly worry when my mom takes him places without me... eventhough I know logically that she's a competent dog owner lol. I just can't help it.
My mom prefers a much different dog than I do. She likes sleek, elegant looking dogs. To live with, she likes a laid back, lower activity level dog that she can just take on a walk once in a while and go for car rides with. Something friendly or reserved and just generally what you think of as a nice, easy pet dog. She's dreamed of owning a Great Dane her entire life. Perhaps one day she'll find the right individual of a Dane for her needs. She can live with a more demanding dog, but in general prefers easy. She raised our Rottweiler, Echo, who matured into one of the most nice tempered dogs I've ever known, so I know she's capable. It's just easy for her now to let me do everything, but once I leave, she definitely knows how to raise a good dog.
I prefer medium-high activity level dogs that are quiet in the house, athletic, take anywhere, try anything, easily trained and eager learners. I also don't mind medium-long coats (like Tollers, BCs, Aussies, etc.), whereas my mom prefers smooth coats.
One day if/when I have an SO, I'll probably still have "my" dogs, just because I can be kind of posessive over my dogs lol. I don't want anyone to ruin them somehow haha. I spend a ton of time with my dogs and put a lot of (fun) work into them. But I hope that he likes similar breeds to me, because I don't care to live with breeds that I don't find enjoyable. Or, better yet, it would be nice to find someone who let me have whatever dogs I want and enjoys them, but isn't quite as into dog stuff as I am.