My roommate and I rescue animals. Between the two of us, we have 1 dog (Aussie cattle dog), 3 cats, 2 rats, 3 lizards (bearded dragon, crested gecko, and veiled chameleon), 1 snake (ball python), 4 pigeons, and 1 chinchilla. The rats and the chameleon might eventually go to new homes (we'll see on that, nothing is concrete yet). We're pretty close to capacity in our small 2-bedroom condo, so going forward we're going to need to put a little more effort into adopting out some of our rescues.
We share responsibility for all the animals, but the dog and one of the cats belong to my roommate and are very bonded to her, so those are definitely "hers" (she also had them both when she first moved in). The other two cats are very much bonded to me, so they're "mine" (one I've had for over 10 years, the other is a 1-year-old we got as a kitten a few months back). I've also taken on most of the responsibility for the chin, so she's more bonded to me, probably just because I've spent more time with her. The pigeons are mainly my roommate's. I like them and can care for them when she's out of town, but I don't have much experience with birds, so I'm not really comfortable handling them and taking them out when my roommate isn't around (though I'm getting better with that). We pretty much share responsibility for the reptiles. If/when one of us moves and we go our separate ways, we plan to split the animals up in whichever way makes the most sense at the time (who's most bonded to whom, what animals are allowed in any new lease/living situation, who has space for what, etc.). If she moved out tomorrow, I'd probably keep my two cats, the chin, the rats, the python, and maybe one or two of the lizards.....but who knows, that could very well change down the road.
I love our menagerie! It's a lot of work, but all our little critters give us so much fun, laughter, and joy. Fostering and adopting out is going to be hard for both of us, because we become attached very quickly, but ultimately it's about making sure the animals are happy and well cared for, whether that's with us or someone else.