Both my yorks are big ish anyway - Dougal's a whopper. There's a mini class in New Zealand but they're thinking of opening up a micro class because there's such a demand from small dog owners to do agility. My Dougal dog is really big and would be in the mini class anyway so there's no problem there. But Dixie would really need to compete in the micro class. At the moment I'm training her mostly so she'll have more confidence. She's quite timid.
Dougal loves agility. They just love to work and please me. (Or may be it's all for the love of S. C. H. M. A C. K. O. S. (Sorry have to spell that or the yorkies'll be pulling "oh please treat me - I'm sooo adorable" faces.)
Do you get schmakos in the US? They're an australian product and my babies just love 'em.
Do you clicker train for your agility?