Grizzly bear on steep riverbank is cautious, sniffs the air repeatedly

ursus arctos horribilis brown bear bear ursus grizzly british columbia wildlife alaska omnivore carnivore male mammal ecotourism bella coola predator habitat animal fauna canada cautious wild sniff arctos ecology wilderness nature claw fur forest solitary horribilis environment look riverbank lone salmon strong danger injury behavior strength steep nervous bank powerful behaviour fish river autumn