This is a male treecat. Treecats are a character created by David Weber for a series of books which unfortunately I haven't read (I tried but can't find anywhere that sells them yet) so this is a request for a friend.
Treecats are six-legged mammals native to the planet Sphinx, where they are a protected species. The colonists of the planet first became aware of the treecats when they made a raid on the greenhouses and stole all the celery. Thats the bit that gets me interested, the weird obsession with celery... I really need these books now. So anyways, treecats have 6 legs, 3 fingers and a poseable thumb. Male treecats are larger than females and have slightly different fur and eye colour.
You would not beleive how hard it was to get a cat looking natural with 6 legs. It was a huge problem, and even the book covers my friend found didn't help, they showed treecats sneakily posed in positions where no legs or only front legs showed. I found precisely one picture with 6 legs and it looked like a caterpilla but I think I got there eventually.
My own cat thinks treecats are insane, she has enough problems keeping two back legs under control nevermind having four of them.
Done in watercolour pencils and ink. This is also in my elfwood gallery (here
8th July 2004