Black Labrador Retriever at Work

I spent most of the last two weeks photographing the AKC 2012 Master National Retriever Club.  It made for some long days shooting and long nights downloading and backing up.  I ended up making 23,437 exposures!  YIKES!  Of course I still haven't even looked at all the files, but when I saw this one, I knew I wanted to share it...

Nikon D3, Nikkor 400 mm w/2x teleconverter, f/6.3, 1/1000th second, ISO 400, tripod, existing light, cropped for composition.