"Darby-Saurus" is the first segment of the sixty-third episode of My Friends Tigger & Pooh.
When Lumpy tells the Super Sleuths that he has lost his dinosaur, they become the Caveman Sleuths. Dressed up, they try acting prehistoric in the hopes of drawing out the dinosaur. When they have no success, they realize that they may be missing something important. They decide to ask Lumpy some more questions.