I took Bruno Levy's model of a stone kitten published on AIM@Shape[1] (specifically the "kitten quads" file) and processed it a little. I fixed minor issues (such as flattening the base) so I could print it out.

[1] http://shapes.aim-at-shape.net/viewgroup.php?id=270

You'll need full exterior support to print the model, the head is just too big and has too much overhang.