Darby's Tooth and Nothin' but the Tooth - S1.E39

When Darby goes off for some errands, Tigger and Pooh are left on their in the event of any Super Sleuth cases. As she leaves them, she casually tells them that she's just lost a tooth. Convinced that Darby must be devastated, the two make it into a case. They begin searching the whole of the Wood for the tooth and enlist Rabbit as a Deputy Sleuth.