Disney has a habit of re-hashing old movies and they don't generally work. Look at the videos in the Aladdin series. This time, however, they have successfully recaptured the characters from the original, and built an entirely new story around them. Granted, many of the voices from the original have passed on, but the new voices do pretty well.
PS -- the dogcatcher is NOT Don Knotts...
PS -- the dogcatcher is NOT Don Knotts...