The final short featuring Sylvester Jr. and Hippety Hopper.
Sylvester Jr. breaks the fourth wall here.
The "psychiatrist" cat is a spoof on Sigmund Freud and his contemporaries.
The sign on the dilapidated old house reads "Tralfaz Investments." It's is an Easter egg of sorts for cartoon scholars, that was (allegedly) the original name of the Jetsons' dog Astro.