I recently took Brandi to obedience class. She weighs about 6 pounds. I, too, was concerned because they required a choke collar or prong collar - which I am against. So, I spoke to the trainer and we agreed that a slip lead would be the best choice for her. (This is the kind of lead they use in the show ring). This is the one I bought, and it worked great! ....
Show Tech Silk Toy Show Leads - Cherrybrook