A Bad Day by Andy Rouse, via - The bear seems to be saying "I simply cannot believe it." Or, as the photographer has put it, "A shot of a Grizzly Cub from last year and I have just been told that it has won Animal Antics in the Natures Best competition!
Eurasian brown bear (Ursus arctos arctos) - a subspecies of brown bear or what's called a grizzly bear in North America. This one's having a good back scratch. A tree's handy when there's no one around to scratch for you!