Western red cedar, larch and whitebark pine share the forest with a variety of spruce and fir tree species.

Large mammals found in Lolo National Forest include the grizzly, black bear, cougar, timber wolf, mountain goat, bighorn sheep, elk, moose and mule deer.

Both the bald and golden eagle reside in the forest along with trumpeter swan, herons and 30 varieties of ducks.

There are local ranger district offices in Huson, Missoula, Plains, Seeley Lake, and Superior.

In descending order of land area the forest is located in parts of Mineral, Missoula, Sanders, Granite, Powell, Lewis and Clark, Flathead, and Ravalli counties.