I have nearly half a dozen other potential entries in my unfinished drawings.
Originally the patches were going to have more of a stripy design... so I added some spots instead. I wasn't sure how many spots should be added to be considered appropriate for the number that canon REKKs should have, so it was a bit hit and miss.
Also, I hope you don't mind the speckled nose/paw pads(?). I thought that it looked much better than a plain old grey or black colour.