My Friends Tigger & Pooh - Season 1 - Eps 51: Darby, Solo Sleuth
A cold is going around the Hundred Acre Wood and Kanga needs lemons to add to a special soup she's making to ease everyone's sniffles. When Pooh and Tigger catch the cold, Darby and Buster are left to sleuth out how to get some lemons themselves. Rabbit was supposed to deliver them, but it seems he's feeling under the weather himself, so the girl and her dog find themselves searching all over the Hundred Acre Wood to get lemons.
About My Friends Tigger & Pooh

Title: My Friends Tigger & Pooh
First Air Date: 2007-05-12
Last Air Date: 2010-10-09
Status: Ended
Rating: 6.8/10 (from 20 votes)
Language: EN
Seasons: 3
Total Episodes: 130
Network: Disney Channel
Genres: Kids, Animation, Drama, Mystery, Action & Adventure
Production Companies: Disney Television Animation
Synopsis
Pooh, Tigger, and friends from the Hundred Acre Wood welcome new neighbors — an adorable six-year-old girl named Darby and her puppy, Buster. With the help of adventurous super sleuths Tigger and Pooh, every episode revolves around the solving of a mystery and an interactive curriculum that encourages viewers to help them out.
Cast

Chloë Grace Moretz
Darby (voice)

Dee Bradley Baker
Buster (voice)

Jim Cummings
Winnie-the-Pooh / Tigger / Beaver (voice)

Travis Oates
Piglet (voice)

Peter Cullen
Eeyore (voice)

Kath Soucie
Kanga (voice)

Ken Sansom
Rabbit (voice)

Max Burkholder
Roo (voice)

Kyle Stanger
Lumpy (voice)

Tara Strong
Porcupine (voice)