Room and Bird

Room and Bird is a 1950 Merrie Melodies (Blue Ribbon Merrie Melodies reissued), animated short, released in 1951, featuring Sylvester and Tweety.

Plot
Two elderly ladies (one of which is Granny), the owners of Sylvester and Tweety, sneak their pets into a hotel where no pets are allowed. Sylvester, hearing Tweety's singing in the room next to his, writes a letter to the canary from his "Ardent Admirer". Tweety shortly discovers who his "admirer" is, and a chase ensues, which is cut short by the doorman, forcing both Tweety and Sylvester to run back into their rooms and the latter to disguise himself (as a lady in bed screaming for help from the policemen) causing the doorman to apologize and flee.

Sylvester then sneaks into Tweety's room and tries to get him in his cage; this backfires and he is knocked out by the spring-loaded cage. Sylvester then phones Tweety that his owner has a surprise for him; Tweety goes downstairs to receive it, but instead goes down Sylvester's throat, returning with a mouse from the time of Thomas Jefferson, explaining he is dead. The chase then goes outside, and into the room of Hector (how his owner got him past the officer is unknown). Sylvester doesn't realize until after he's captured Tweety again that the dog is there. Another chase ensues, involving dog, cat and bird, which is also cut short by the doorman, forcing the three to form a truce long enough to disguise themselves (as an angry old lady with Tweety's head). The chase resumes again with the three animals running from room to room, making the doorman suspicious. Finally, cat, dog, and bird noises are heard behind a door (or he sees the trio off-screen), prompting the frustrated doorman to finally head back to the lobby and make an announcement over the intercom evicting all pets. Unfortunately for him, a veritable zoo calls the hotel home, and comes stampeding over him.

Getting up, the doorman dizzily says Tweety's catch phrase: "I tawt I taw a putty tat!" Tweety, popping out of hiding, delivers the final punchline by replying, "You did! You did! You taw a putty tat, a moo-moo tow, a big dowiwwa, a diddy-up hortey, and a wittle monkey!" (A busker's monkey was the last animal to run over the doorman)