Your kitties are adorable. But you can probably guess from all the cat and dog photos on my page that I like little furry four-legged creatures.
I know you asked for critique. I don't feel particularly qualified to critique photography, but I'll give it a try. I really like the composition of this piece and the kitten is definitely the focal point.
The quality seems a little blurry, which I assume is largely due to the fact that you're using a point-and-shoot camera, possibly with the zoom. This is a case where, I think, a better camera would make a difference as it would give you a clearer image and, if it's a DSLR, would allow you to focus specifically on your subject and have the kitty in focus with the walls behind him/her slightly out of focus.
Do you do any post editing? If not, I would highly recommend downloading GIMP, which is free. It allows you to do many of the same things you can do in Photoshop. In this case, I would probably adjust the brightness and contrast to bring the light colors out more and darken the shadows.
Actually, I use a DSLR camera, Finepix s9000. I do use photoshop, but I haven't done any post editing on any of the pics except for the Koi photo. Unfortunately, with my cat, if you aren't fast on the draw he tends to move, so getting a good, in focus shot can be difficult. I've probably taken more than a hundred shots of him, and only the ones I've posted here came out. Thanks for the information, though. I will probably do more post editing when I actually figure out how everything works. I've done some photo manipulation stuff, but nothing I can post here.
I'm not saying that the Finepix isn't a good camera, but it isn't technically a DSLR because it does not have the features that make a DSLR a DSLR - the reflex design scheme, which uses a mirror to reflect the light to the view finder (and the camera's sensor) and interchangeable lenses. It's certainly a DSLR-like camera with many of the same features but I would argue that the lens quality (and with that, the overall image quality) isn't the same as a DSLR, although in bright daylight and without zoom, it's very close.
And I know exactly what you mean about photographing cats! I have four of them and getting pictures, especially action shots, is a challenge. I've had good results with an external flash and a second person helping me set up my shots.
In Photoshop, I think your best friends are going to be the settings to adjust brightness/contrast, color, etc. I use those a lot when editing my photos. I'm a fan of saturated colors and do prefer to shoot in bright sunlight (which makes a lot of photographers cringe) over shooting on overcast days.