They use clicker training. That works great for any animal. One of the trainers was out practicing with a young racoon. Looked like he was mainly getting the animal to follow and be attentive. Racoon look at trainer, click.
Raccoon follow hand, click.
Raccoon make eye contact, click. That sort of stuff. Then for the show they had a variety of animals. The show is held in a small amputator with a hedge separating the public from the animals. Right before the show there was a young boy, probably about 3 or 4 years old, who was up against the hedge.