I have noticed lately when giving my Izzy her bath that she is losing a lot of hair...no baldness any where. I didn't think yorkies were suppose to shed like this. I ask my husband if they shed a winter coat but he said no...I don't give her vitamins and I feed her Purina small bites and Ceasers Cuisine...she will not touch Iams or Eucanuba! Any suggestions or thoughts would be greatly appreciated..