The Tom and Jerry Show III (39)

A fast-talking sales cat named Dr. Jake L. appears to Tom from a trap door in the floor, selling "Ache-Eee Bones" tonic. However, when the doctor sees Jerry and Tuffy, he instantly turns into the slobbering Mr. Hyde-Cat and chases them, but then changes back to the doctor. Tom wants to buy the tonic but soon finds out what's happening with the visiting cat and tries to get rid of him.

Chris Parnell, Jason Alexander, Grey Griffin, Alicyn Packard, Rick Zieff, Eric Bauza