Over at Satellite Soda http://satellitesoda.com is a daily draw challenege.
Here's the Grimalkin or Greymalkin
These cats are usually witches' familiars. There's not a whole lot of info on them but from what I could find, they tend to be older female cats, usually have glowing eyes and have the ability to shapeshift. I gave it a skullface because it's cool. I might do another of this one, doing a transformation...

Also on my blog: http://themadmasker.blogspot.com