A family of river otters (Lontra canadensis) foraging in the Yellowstone River in Hayden Valley in Yellowstone National Park, Wyoming

3 animals 3 animal themes animal theme animals dams dam forage foraging hayden valley habitat horizontals horizontal in the wild lontra canadensis landscape looking for food mammal mammals national park national parks no one no people no person no body no one nobody np nps otter otters river otter river otters river rivers three animals water wild animal wild animals wildlife wild yellowstone national park yellowstone river yellowstone