Dr. Jekyll and Mr. Mouse Tom and jerry 1940 x 30

Dr. Jekyll and Mr. Mouse

Jerry drinks a potion that makes him grow super-strong. He decides to go after Tom because this time, he's stronger. Once the potion wears off, Tom drinks some of it himself and grows bigger and super-strong. But he then immediately shrinks to half the size of Jerry, then to the size of an ant, and runs away from Jerry, who proceeds to chase him with a fly-swatter.