Poor Diddy!!! I would never take him back to that PetSmart! I have never heard of withholding their food unless it is vet instructions!!

Their blood sugar drops and they get faint. Hardly good preparation for a training class! And the groomer
shaved him and
cut him?

I would have been furious! I would take that baby to my
own vet to be checked! I can imagine how devistated you must be! Yorkies are hyper babies ... I thought people who dealt with them would be experienced enough to deal with the different personalities. I am so sorry you had such a horrible experience. Please keep us updated on Diddy's progress!!