Bolt was originally going to be a Chris Sanders movie. It was eventually revamped into what it is today when he was fired from the project. Apparently American Dog was too weird for Disney, with its one-eyed cat and giant radioactive rabbit.
The plot is:
Henry, a famous TV dog, finds himself stranded in the Nevada desert. Out in the world for the first time, Henry’s tidy life of scripted triumph has come to an end, and his 2,000 mile trek through the real world is just beginning. Henry is a popular dog. He stars in his own television series, in which he is a James Bond style secret agent who manages to survive the most wonderful adventures. Henry is the toast of the town, but then one day one of the stunts in his show goes terribly wrong, Henry loses consciousness, and when he wakes up he finds himself on a train, thousands of miles away from his home. Henry has been a celebrity all his life and does not know how to handle himself in this new situation, but luckily he is able to make some new friends that he convinces to get him back home.
Before American Dog because Bolt, me and a friend had visited a friend at Disney Feature and saw all this amazing development work for it, were stunned and more than excited to see it. Bolt may be allright, but American Dog was the movie I really wanted to see.
(Source: furry-furrets, via animationtidbits)