Dug's Special Mission (home media; 4:42)
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This features characters from the movie Up, and originally appeared on the DVD of that film. It's also available on the Pixar Short Films Collection, volume 2. The film shows us how Dug's day had been going up til the point when he met Carl and Russell, in the movie. So that was a fun and amusing new perspective. His "pack" of three other dogs kept giving him "missions" that were designed to keep Dug out of their way while they chased a bird, but those missions kept going awry and interfering with the hunt.
See also Dug Days
Your Friend the Rat *
Presto *
BURN-E *
Partly Cloudy *
Dug's Special Mission *
George and A.J. *
Day & Night *
Hawaiian Vacation *
Air Mater *
Small Fry *
Time Travel Mater *
La Luna