Hi, this is my first post. I have a 7 month old labradoodle

and I want to eventually (months from now) add a morkie or a yorkie-poo. LOL, notice a pattern? I love mixed breeds! I don't know how y'all feel about "designer dogs" on this forum but I was hoping for some answers.
Can yorkies do stairs? Do most of you use puppy pads/puppy litter box or do you potty train outside?
How much grooming is required? I know this depends on what mix I get but I was just wondering for yorkies.
I know I have more questions but I can't think of them right now. I'd LOVE to be able to rescue one of these breeds from an organization that raids puppy mills, LOL but I don't know if it'll be that easy. I'd like to hear from any of you that have yorkie mixes!