Hi...We have Gunnar, a rottweiler, and our 2 little yorkies. They are doing fine.
My best friend- she has 3 Yorkies and a Rottweiler. They have done fantastic. The Yorkies were first...So the rott thinks he is a 90 lb Yorkie. He seriously does not realize he is huge...That is where we got the idea that it would be okay.
I would post pics but I can never get anyone still long enough. I always get the The toy or The bone or The ball...No dogs....lol
Now we do watch them carefully to make sure that no one gets hurts and we never leave them alone....But it works for us