Pooh's Heffalump Movie is a 2005 animated film produced by DisneyToon Studios and released by Walt Disney Pictures, featuring characters from A. A. Milne's Winnie-the-Pooh stories. This film features songs by Carly Simon. It was the final Pooh film released in John Fiedler's lifetime. Wikipedia
Winnie the Pooh: (narrating) You know, we never really did capture a heffalump that day. It was more like... like Lumpy captured all of us.