The opening credits feature Top Cat entering a high-class restaurant to have lunch... which he picks from a construction worker working across the restaurant. He escapes from the maitre'd and the worker into a taxi and gets away (originally the series title appears on a blind TC pulls down in the taxi - later versions feature the title as TC gets into the taxi).
The closing credits feature Top Cat returning to his alley and going to bed. The series title also appears on a billboard above the alley.