Rock & Rule

Rock & Rule is a 1983 Canadian adult animated musical science fiction fantasy film from the animated-film company Nelvana. It was the animation studio's first feature film. Rock & Rule was produced and directed by Michael Hirsh, Patrick Loubert, and Clive A. Smith with John Halfpenny, Patrick Loubert, and Peter Sauder at the helm of its screenplay. The film also features the voices of Don Francks, Greg Salata, and Susan Roman.

= WORLD = The narration states that in 1983 a nuclear World War 3 that was fought between the United States of America and the Soviet Union had wiped out humanity and destroyed the world in which mutated animals (Cats, Dogs, and Rats) have replaced humans.

Much of the world is dark and grim, with urban cities having only a weaker form of order and law compared to today.

= Fauna = All of the creatures that exist in this world used to be either domesticated animals or common pests. Effected by the high levels of radiation, they all mutated into a more human-like appearance, and highly evolved intelligence to mimic Human Beings to a tee.

External Link
Rock & Rule Wikipedia