Hi Diane, and welcome to the Petcommando site and show. By any chance do your Yorkies totally dominate the Dobe? lol,,,often the little ones rule the roost over the big dogs. Please check back with us frequently and tell any friends you might have that love animals about it also. We are constantly on the look-out for animals that have lives that need improving, so please let us know if you run into any that need help!