Keywords: usgs science biology bear grizzly mom cub animals yellowstone yellowstonenationalpark norock outdoor animal "Uh, mom...need a little help here. Mom? MOM?!" A USGS grizzly bear researcher snapped this picture of a mother grizzly bear and her cub at Gibbon River in Yellowstone National Park. Adult females are the most important segment of the grizzly bear populations because they are the reproductive engine. Learn more about the importance of grizzlies and other large carnivores and how USGS is vital to this research area at usgs.gov/norock. Photo credit: Frank van Manen, USGS "Uh, mom...need a little help here. Mom? MOM?!" A USGS grizzly bear researcher snapped this picture of a mother grizzly bear and her cub at Gibbon River in Yellowstone National Park. Adult females are the most important segment of the grizzly bear populations because they are the reproductive engine. Learn more about the importance of grizzlies and other large carnivores and how USGS is vital to this research area at usgs.gov/norock. Photo credit: Frank van Manen, USGS |