My next door neighbor's cat Black Jack is very Dark and Fluffy.
The second shot is one I took of him on my deck before I started keeping my back fence shut so the cats wouldn't annoy the backyard birds.
The cat below is also dark and fluffy but I can't remember his or her name.
I sure do have a lot of dark and fluffy cats visiting me, particularly since my city has an ordinance against people letting their cats roam. Click for Sandy's Fluffy Photohunt and/or click here for Gattina's Dark Photohunt.