Volume 2, Brainy Jack
S3, E18: Discovering that the best way to take over the world is through pacifism, Pinky and the Brain travel to the Southwest on horseback to create a colony and teach the world of peace.

S3, E18: Discovering that the best way to take over the world is through pacifism, Pinky and the Brain travel to the Southwest on horseback to create a colony and teach the world of peace.