Top Cat is an animated television series made by the Hanna-Barbera studios which ran from September 27, 1961 to April 18, 1962 for a run of 30 episodes on the ABC network.
It debuted on 16 May 1962, under its original name but was renamed The Boss Cat on 13 June 1962. This was shortened on 22 February 1967 to Boss Cat. This rapid name change was made because Top Cat was also the name of a then-popular British brand of cat food. The dialogue and theme tune still referred to the character by his original name but a small cut was made at the climax of the opening credits (resulting in a slight 'jump' in the film) and a title card added before the episode proper. Similarly, the 'Top Cat' name was edited from the final section of the show's closing credits, causing another slight 'jump' (as Top Cat is putting on his eyeshades and readying himself for sleep in his trash can).
Despite the 'Boss Cat' title card, the continued use of the Top Cat name (and the acronym 'T.C') throughout the UK-aired soundtrack meant that the character was always popularly referred to as 'Top Cat' by every generation of UK viewers. The 'Boss Cat' title card was last used for a repeat run in 1989; by the time the series was next aired in 1999 the 'Top Cat' food brand had been discontinued in the UK (as had any concerns about mirroring such a brand name even if it did exist), allowing the original title to be used. This continues to be the case in contemporary showings on Boomerang and BBC Two.
The British titles currently cannot be found on the internet.