Photograph by @paulnicklen // As temperatures fall, bears enter into a “get fat quick” phase called hyperphagia. While in hyperphagia, grizzly and black bears gorge and gain up to four pounds a day as they forage for anything and everything even remotely edible. They need this fat in order to survive a long winter's sleep. Fortunately, for this young grizzly bear, its pink lips are proof of a feast on salmon. To see more of my favorite pictures of bears, #followme on @paulnicklen // #bear #nature #naturelovers #thejourney #winteriscoming #wild #instagood