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ohhh i would love to be the quiet, inobtrusive observer here! so beautiful! Ive been writing /reporting about wolves (self)-reintroduction to my beloved home of the Rockies literally my entire career/life... finally into (starting) a final book on their jny-- and mine! Thank you for posting.

I wonder what hibernation has to do with that. Bears need to get fat to last through hibernation, so expending a lot of energy to catch salmon doesn't make a whole lot of sense. Wolves hunt all winter so leaping into rivers to catch salmon is a rational reason for the energy expenditure.