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

1 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 boat boats color color image color images colour image colour colour images cub cubs days day habitats habitat 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 one animal one outdoors outside playful behaviour protected area protected areas play behaviour playful playing play river rivers ship ships transport transportation to play us usa united states united states of america ursus arctos us usa vessel vessels water young young animal young animals yearling yearlings youngsters s057