Mama moose helps her baby cross a river in Rocky Mountain National Park. Tweeted by the US Department of the Interior, 5/29/15.
We’ve got our eyes on you! Baby great-horned owl & its mama. Photo by Richard Crossley. Tweeted by the US Department of the Interior, 5/19/15.
Karl Persson captured this shot of a mama bear (with her two bear cubs in tow) knocking on a bus door in Denali National Park. Posted on Tumblr by the US Department of the Interior, 5/25/15.