Cutthroat trout, seen here spawning in the Gros Ventre River, are highly prized by anglers. Adapted to cold water, they’re threatened by a warming climate—and in Yellowstone Lake, by non ...

Yellowstone cutthroat trout are on the brink of extinction as invasive lake trout continue to eat them. With the park's ecosystem at risk, it's up to scientists to figure out where these predators ...

Cutthroat trout are Idaho’s state fish, and the Westslope cutties are one of three subspecies native to the state, along with the Bonneville and Yellowstone cutthroat trout. If you’re looking ...

#FIXME Descriptive Unqiue Link Text #FIXME Descriptive Unqiue Link Text Grizzly bears supplement their diet with cutthroat trout and other native fish in Yellowstone’s rivers. As climate change warms ...

Young common loon chicks rest on the back of their mother at Yellowstone National Park. A weasel blends into snow in Grand Teton. In spring it will molt and turn light brown. Cutthroat trout ...