Three years before he hit NBC, the Pink Panther was appearing in theatres in shorts that would later air on Saturday mornings. Hence, the "Official Pink Panther" channel on YouTube offers up 1966's "Pink Blueprint", complete with the theatrical open & closing cards. The subtle laugh track you hear was, I think, added for television broadcast.
William Lava conducted the orchestra utilizing Henry Mancini's iconic theme music. Lava had taken over as musical director at Warner Bros.' animation division before it was shuttered in the mid-60's. Otherwise, he's better known for the themes from F-Troop.