Two curious brown bear cubs (Ursus arctos), inspecting and gnawing on park ranger and service boats at the Brooks River in Katmai National Park near Bristol Bay, Alaska, USA. Pacific Ocean

2 alaska animal animal age animal group animalia animals america american americas animal theme animal themes bear bears bristol bay brooks river brown bear brown bears babies baby animal baby animals baby boats boat color image color images color colour image colour colour images cub cubs day days habitat habitats horizontal horizontals immature juvenile katmai national park katmai np katmai landscape mammalia mammal mammals natural phenomena natural phenomenon natural world natural worlds nature north america national park national parks no one no people no person no body no one nobody np nps outdoors outside playful behaviour protected area protected areas pair play play behaviour playful playing river rivers ship ships transport transportation to play two animals two us usa united states united states of america ursus arctos us usa vessel vessels water young animal young animals young yearling yearlings youngsters s057