Koro no Osanpo (コロの大さんぽ, Koro no Oosanpo), Koro's Big Day Out (lit. Koro's big walk), is a 2002 Japanese animated short film. Hayao Miyazaki of Studio Ghibli is the writer and director. The film is about Koro the puppy, who runs away from his mistress, experiences some adventures around town and who is finally happily returned home. The film is exclusively shown at the Ghibli Museum and Ghibli Park, both in Japan.