Well, I think your vet could be wrong- Chi and yorkies have "up ears" or suppose to..... you know what I mean- so I can see why a chi/yorkie mix would have Pappilion "ears"
Oh, WELCOME BACK!!
here is pictures of some chorkies- i have saved to my PC!
The last one is Banjo and his brother Nick!!!

and there are different looks!
but it really does not matter what any of them are- it just matters that they are LOVED!!!!
we LOVE little Miss Maggy May!

Yes, we do!!!