Since the Morkie is a crossbreed, you are not guaranteed the exact looks you would if it were a purebred. However, the average full-grown Yorkie and Maltese mix usually measures in at around 6 to 8 inches at the shoulder and from 4 to 8 pounds. Teacup Morkies, on the other paw, are on the smaller side of that average. The coat of the Maltese Yorkie is a beautiful blend of its genetics, being soft and slightly longer. They can be solid black, white, tan or a combination of all three.