Yeah, I'm afraid you're out of luck until Eovia and/or some third party comes up with a fur plugin. Really high quality hair and fur is still hard to come by even using Maya or Max or Lightwave -- let alone in Carrara. I don't know what the deamds of your image is specifically, but you can do a lot to make things look "puffy" using blobs from the metaball modeler, and when you combine that with some clever shaders that bump map your model in a "hairy" organic-looking pattern, you can create something of that look, at least. Of course it still won't look like individual strands of fur in an extreme closeup, if that's what you need, but it might give the illusion of fur at a reasonable distance.