The mountain goat is not a goat in the strict taxonomic sense — it is the sole living member of the genus Oreamnos, more closely related to the antelopes of the Old World than to domestic goats. What it is, unambiguously, is the most committed altitude specialist on the continent. Stocky body, double-layered white coat, hooves with hard outer rims and soft rubbery centers that grip rock the way climbing shoes do. They live where the maps run out of contour lines.
Native populations occupy the Cascade, Coast, and Rocky Mountain ranges from southern Alaska through British Columbia and into Washington, Idaho, Montana, and Wyoming. Transplanted herds have been established in Colorado, Utah, Nevada, South Dakota, and Oregon. Both billies (males) and nannies (females) carry horns — solid black, sharp, and dangerous; the species is responsible for a small but persistent number of human injuries and at least one fatality in Olympic National Park.
For hunters, the mountain goat is a once-in-a-lifetime pursuit in most states. The terrain is the hunt — vertical, exposed, and unforgiving. Recovery of a downed animal off a cliff face is its own engineering problem, and several state agencies specifically warn applicants to consider whether they can get the animal out before they apply.