Picking a dog

Question
I currently have a 3 year old Schnoodle.  I love her!  She is about 14 lbs.  I would like to get another dog but I'm trying to determine which breed would be the best with my Schoodle.  My only requirement is that it is non-shedding.  Small to medium in size.  Also, my mother has two small Yorkies and my sister has a Westie.  They dogsit for me when necessary so it is important to keep those dogs in mind.  Thank you for any advice you can provide.

Answer
Well there are several breeds that would fit the bill,shi tzus,scottish terriers,westies,poodles and yorkshire terriers would all be good choices

another good idea is to go to a shelter and see what they have to offer and explain to them what you are looking for