Going, Going, Dragon!

"Sasspants, Hamisher, and company have never been so raucous at the Mr. Venezi's Pets And Stuff pet supplies shop. This time, there's scuba-diving in the fish tank with the Steves, what appears to be a dragon hiding behind the counter, and Mr. Venezi's insistence that the store has been robbed of exactly sixty-four dollars and forty-two cents"--