Merrie Melodies - Hyde and Go Tweet (1960)

Hyde and Go Tweet is a 1960 Warner Bros. Merrie Melodies animated short directed by Friz Freleng. The voices were performed by Mel Blanc. The short was released on May 14, 1960, and stars Tweety and Sylvester.
The short is the third directed by Freleng based on Robert Louis Stevenson's 1886 novella Strange Case of Dr. Jekyll and Mr. Hyde. The title is a play on the game hide and go seek.
Notes:
It was featured in the film Daffy Duck's Quackbusters, with new animation showing Sylvester in Daffy's office.
It was also used in Bugs Bunny's Howl-oween Special.
This cartoon lacks a MPAA number on the credits card.
This is one of the few, if not only, times in which Tweety chases Sylvester.
The Sylvester & Tweety Mysteries episode called "London Broiled" is based on this cartoon, which also has Tweety turning into a Hyde-like monster.
The two cats in the end of the cartoon reappear in "London Broiled", as well as making cameos in the series from time to time.
Michael Maltese wrote this cartoon, but was not credited in this cartoon as he had left the Warner Bros. studio for Hanna-Barbera before its release.
"Voice Characterizations" is replaced with "Voices" in the opening credits.
On Cartoon Network and Boomerang, this cartoon is shown with PAL audio.
The restored HBO Max print of this cartoon incorrectly uses the "A VITAPHONE RELEASE" byline from another cartoon (most likely from "From Hare to Heir") and scraps the original 1959-60 end card.