Yorkies are not one of the breeds that are included in earthdog competitions. I believe that might be changed, but don't know when (or if) that would happen.
You might want to find and talk to your local earthdog group. I know the one around here will still let other breeds practice with them, they just can't officially compete.
__________________ Life is merrier with a Yorkshire Terrier! Jezebel  & Chuy ... RIP: Barkley  Loosie & Sassy  |