I am a big proponent of obedience for all dogs. Cali started at 9 months with obedience but had just come out of the confirmation ring so was very quick to learn. We now do agility, however, for those of you with toy breeds I need to be sure you understand that unless the club serves a good number of toy dogs they will not have the toy agility equipment. Cali spent most of the year with "big dog" equipment and only when we got pretty serious about it I had to start investing in toy agility equipment myself. Has really changed how she works the course. round here most of the agility trials do NOT accommodate toys so be sure you check that out if you are going to compete. We have to shop around for toy agility trials as they are not as common as the other agility shows.
For fun you can take the "bit dog" agility classes but the teeter won't work for you and the tire won't be low enough.. You can lay boards on the ground for other jumps. The tunnels will be too big for realistic toy work, but the dog can get the idea.
Whenever you see a Yorkie special show and they Are doing agility they will have the toy equipment.
One trial invited me to compete if I wanted to bring my own equipment, but there would be no toy class for me to compete with. I think they are very interested in seeing a toy run the course.
Agility is a great confidence builder for dogs that have anxiety issues and need lots of action to forget about their fears. It is pretty much the only time Cali is not thinking about hawks coming after her so she just goes all out