I remember Arnold Stang doing the voice of T.C. in Top Cat '61 beside doing Herman's voice in this cartoon. Mr. Stang also played Sinatra's seedy but loyal pal Sparrow in "The Man with the Golden Arm." He also worked on The Phil Silvers Show. I knew that voice sounded familiar.
0:37 this scene is actually animated by referencing the cat catching scene from paramount's "saved by the bell" episode that is why we can see a significant character change in katnip's face