Unbeknownst to their human companions, dogs have been fighting for thousands of years to keep mankind from falling under the rule of cats. In this film, a puppy named Lou and his team of dog agents help to save the world from evil feline Mr. Tinkles. It was both produced and distributed by Warner Brothers Pictures.

Jim Henson's Creature Shop designed and produced 20 animatronic cats and dogs for the movie. Carefully matched animatronic puppets not only helped to bridge the performance gap between the real animals used in the film and the 3-D computer animations, but allowed the director to develop the villains' and heroes' characters in camera.