re: the hump. The first thing that should stand out in this picture is the shape of the ears and the lack of a dished snout.
I don't know about Alaska, Idaho or Wy, but in Montana, you are required to take an initial test on line to identify black vs grizzly bears. I believe this ' has been done to reduce the amount of "accidental" shooting of grizzlies. I believe, it was a pre-emptive move by FWP for good pr. Check it out for future reference if you're ever in Grizzly country:
http://fwp.mt.gov/bearid/test.htm
On a similar note:
Some genius from out of state a few years ago, took his cow elk to the taxidermist only to be informed he had shot a llama. He must have been proud.
last note: for lower 48 standards, this was quite a bear
http://www.outdoorlife.com/photos/ga...2009/02/gris-6