Wow, that's charcoal? Good job! I've worked with charcoal before, and it's a shitty medium to use because it has a tendency to smear. Everything I've ever done with it ended up looking like one giant black smudge. Of course, that could just be me blaming the charcoal for my lack of artistic ability. /in denial
Anyway, well done! The fur looks realistically fluffed up.