The owners of Shadow the Golden Retriever , Sassy the Himalayan cat ( Sally Field ) , and Chance the American Bulldog ( Michael J. Fox ) decide to take a trip to Canada . The owners of Shadow the Golden Retriever ( voiced by Ralph Waite ) , Sassy the Himalayan cat ( Sally Field ) , and Chance the American Bulldog ( Michael J. Fox ) decide to take a family trip to Canada .