Not particularly interesting...
There were decent music choices which fit your animation quite well, and the art wasn't terrible. Everything was recognizable and really quite presentable. I'll have to say that this was decent, besides mainly the essential actual content of this 'game'. It was horribly short, and there wasn't that much to do. Mainly buttons which would cause the cat to do something when you put your mouse over it.
The backgrounds were really quite simple, and there are little imperfections which annoy me such as when you make the cat blink (what kind of cruel person pokes their interactive kitten in the eye??!) the lines in one of the kitten ears changes a bit.
Furthermore, whilst having to wait until an animation for a certain part of the cat to finish before another one will start has its advantages, it is somewhat more difficult to catch all the different aspects of inter-activeness of the cat.
Overall, it was good but too short with a few quirks here and there.