Based on the downloaded .obj file, heavily processed in OpenSCAD and MeshLab.
The cat's chin needs support, though PrusaSlicer didn't warn me. I uploaded a gcode with the support include, and 3mf with the support enforcer painted on, but they are untested. A brim is required (and I decided to leave the brim on, a base of sorts).
Here is a low poly version: https://www.printables.com/model/553164-low-poly-gayer-anderson-cat-from-the-british-museu
Thanks to be generous with your “Likes” and share your “Makes!” Check out my collection “The British Museum” for other historical artifacts that can be printed at home.
"The Gayer-Anderson cat" (https://skfb.ly/o6E8K) by danielpett is licensed under Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/).
The author remixed this model.
Removed base, applied voronoi pattern to surface