There is no need for a choker or collar when walking yorkies or other small breeds, as others have posted they can be damaging to the trachea.
The best $100 I have spent on my yorkies was a simple obedience class. The skills you learn, will enable you to teach your dog how to properly walk on a lead. I walk 5 small dogs (wearing harnesses) at a time on separate leads (without a coupler) with none of them pulling, and rarely even have a tangled lead.
__________________  ~Ruby, Reno, Razz, & Jack~ |