Animaniacs (1993)

S1E39 Pavlov's Mice

Set in early 20th century Russia, Brain devises a scheme to conquer the world by pilfering the Russian crown jewels. However, he faces a significant hurdle: both he and Pinky have been conditioned by the renowned psychiatrist Ivan Pavlov. This conditioning complicates their plans, creating unexpected challenges as they navigate their ambitions while grappling with their newfound responses.