Lucky is 1 yr old and still gets into stuff. For instance if I drop a dryer sheet after getting my clothes out he takes it and runs and shreds it. I try to keep everything put up but if he does get something I just say bad puppy and pick it up and throw it away. That hurts him worse than a spanking ever would. He doesnt want me to be mad at him. They are very curious and want to get into everything but thats just part of it. lol. I think the first key in training a Yorkie is teaching them no and the difference between bad puppy (no reward) and good puppy (treat and lots of praise) They really love to please. They are very smart.