Very true and good observation Axle. Who knows, I have seen blacktails destroy 16-18'' diameter alders but most damage I tend to see is relatively light rubbing like that pic shows but you could be up to something with the branches? I am a forester and the bear damage I usually run accross tends to be peeled off chuncks, small or the whole tree and some times the top third of 20'' diameter Doug firs, interupted three last year 40' up in the tree, pretty fun! Well if im wrong I guess that explains why I am partially giving up bowhunting big blacktails!