This short animated film is part of "Spike and Mike's Cutting Edge Classics"--a DVD filled with an hour and a half of very short animated films. Most of them are pretty good and the DVD is much better than the other Spike and Mike one I saw a few months back.
The best thing about KATTEN MONS is the incredibly cool claymation art. The story itself of a very, very hungry cat that eats anything and everything is only okay, but it doesn't matter too much since the film is more like a piece of art than a traditional film. As for the clay, the story is told using two-dimensional tableaux that morph and change before your eyes. It's all rather hypnotic and cool and is well worth seeing.
FYI--On the same disk is included another one of the director's shorts about a guy who falls in love with a rat. It's REAAALLY weird but the claymation is even better.