Young brown bear (Ursus arctos) scratching its back on the gravel at the Brooks River, Katmai National Park, Alaska, United States of America

brown bear ursus arctos young brooks river alaska wildlife animal behavior scratching summer riverbank playful nature lush vegetation grizzly outdoor north america mammal wild environmental natural habitat serene furry paws reflection water grazing exploration moment observation scenic area antics conservation cute ecosystem muddy golden fur native creature seasonal activity wilderness