Why is Stitch called 626?
The experiment number for Stitch is “626” which is an area code for the San Gabriel Valley in Southern California (Whether one of the writers for the movie lives or is from this area is not known).
What kind of dog is Stitch?
Stitch is a blue, koala-like, alien genetic creation standing around 3 feet tall. He is referred to as a dog throughout much of the franchise, and was thought in the beginning by Lilo to be a collie hit by a car, and Nani thought it was a koala of a sort before they found out he was a genetic experiment.