Depends really what u want the crate for? I have a HUGE crate for bailey inside has a pee pad, his bed where he can go to sleep and then space for him to play with some toys. I leave bailey in his crate when i leave the house and put him in it when i go to bed. If u just want it as a den then get a small one, big enough for him to stand up and turn around in. Good luck with finding your new little yorkie
xx