The Cat Cabinet is the only museum in the world to feature a collection of objects d'art wholly centered around the theme of the cat. The collection is intended as a comprehensive portrayal of the cat in art and culture throughout the centuries.(From the KattenKabinet website)
You know, I'm getting a sense of deja'vu here. All cat museums seem to claim that they were the first and the best, with the largest collection of cat-related artefacts. But this museum, with its impressive website, looks more the part than, perhaps, its counterparts in Moscow and Kuching. (A triumph of style over substance perhaps? I'm a sucker for a fancy website!)
The website features a gallery of works in the collection, and a history of the building in which the museum is housed. All very sensible. And then you get to the page about the museum founder's own pussy-cat and inspiration for the KattenKabinet, John Pierpont Morgan (that's the cat's name, btw). Proof that the closer apparently intelligent people get to a cat, the dafter they appear to be! (See here for a diagram.)
Sadly, it doesn't look like the museum website has been updated since 2005. Perhaps any Amsterdam-based 'Attikers' out there could confirm that it's still open?