What was the name of a short tv series in 90s that starred Manx cat called Max?

You are likely thinking of the 1990s television series called "Max & Paddy".

This British sitcom featured a Manx cat named Max who was the main character and had many misadventures alongside his owner, Paddy. The show ran for two seasons, from 1995 to 1997, on the UK's Channel 4.