A gorgeous little prequel to Up! Touching.
Dug's Special Mission is a short Pixar film, directed by Ronnie del Carmen. It is tied into and included on the DVD and Blu-ray Disc release of Up.
Jonas Rivera, producer of Pixar's film Up, revealed that Dug's Special Mission "is a little bit of the backstory of what Dug was actually doing out there on this mysterious mission when we meet him [in Up]". In the short, Dug is instructed on how to catch the bird (Kevin) by Alpha, Beta, and Gamma, but their instructions are really intended to keep Dug away from them.
It is Dug's birthday. This Golden Retriever wishes that it will be the happiest day of his life, when suddenly, Kevin runs over him and Alpha (a Doberman Pinscher), Beta (a Rottweiler) and Gamma (a Bulldog) run into Dug. Irritated with Dug getting in their way, they come up with "special missions" for Dug to help capture the bird. However, these are just ploys to keep Dug out of their way. Alpha assigns Dug to watch a large rock and make sure it doesn't move, because it is ...