Game animals · Side by side

Mountain Goat vs Bighorn Sheep

How to tell them apart

Mountain Goat (Oreamnos americanus)
Mountain GoatOreamnos americanusPhoto: (c) Ross Donihue, some rights reserved (CC BY), uploaded by Ross Donihue
Bighorn Sheep (Ovis canadensis)
Bighorn SheepOvis canadensisPhoto: (c) John Krampl, some rights reserved (CC BY)

Quick answer

Color and horns settle it: a mountain goat is white and shaggy, with a beard and short black dagger-like horns on both sexes, while a bighorn is brown with a white rump and rams carry massive curled horns. Bighorn ewes have short brown horns but never a beard or a white coat.

Mountain goats and bighorn sheep share many western mountains, from Glacier National Park to the Colorado high country, and both are horned cliff specialists. They come from different branches of the goat-and-sheep family, though, and look and behave nothing alike up close. The difference matters to hunters, who need separate and hard-to-draw tags, and to hikers who meet both near trails.

Key differences

TraitMountain GoatBighorn Sheep
CoatWhite and shaggy, with a beardBrown with a white rump and muzzle
HornsShort, black and dagger-shaped on both sexesRams: massive brown curls; ewes: short sickle horns
Adult weightBillies about 260 lb, nannies about 180 lbRams about 230 lb, ewes about 125 lb
TerrainSheer cliffs and ledges, often above timberlineGrassy slopes beside rocky escape terrain
Fighting styleSide by side, jabbing horns at the flanksHead-on clashes
RutLate October to early DecemberPeaks November into early December
ClassificationGoat-antelope (Oreamnos), not a true goatTrue wild sheep (Ovis)
Boone and Crockett record60 4/8 (British Columbia, 2022)216 3/8 (Montana pickup, 2016)

Where you will see both

Their ranges overlap through the northern Rockies of Montana, Idaho, Alberta and British Columbia, and in Colorado, where both are prized, though goats there were introduced. Where they share a mountain, they usually split it: goats stand on the cliffs themselves, while bighorns graze the grassy slopes and benches next to the rock and retreat into it when threatened. Goats also range far north and west along the coast into Alaska, where bighorns do not live, while bighorns extend south into desert ranges no goat could use.

Different families, different fights

Both belong to the same broad family as cattle, goats and sheep, but the mountain goat is a goat-antelope whose nearest relatives are the chamois and serow of Europe and Asia, not barnyard goats. Bighorns are true sheep. That shows in how they fight. Bighorn rams rear and crash head-on, their thick skulls built for impact. Mountain goats circle and jab at each other's flanks and hindquarters with their sharp horns, and billies sometimes carry puncture wounds on the hindquarters to prove it.

Hunting and eating each

Tags for both are scarce, and drawing one can take many years. Goat hunting is mostly a terrain problem: goats are not very wary, but a goat shot on a ledge can fall hundreds of feet, and hunters are urged to take billies and spare nannies. Sheep hunting demands more careful stalking and horn judging. On the table, wild sheep is mild and highly rated, young goats are very good, and old billies after the rut are tough enough to go straight into the grinder.

By the numbers

The traits the daily hunt game compares for each.

ClueMountain GoatBighorn Sheep
TypeBig gameBig game
HabitatMountainsMountains
HeadgearHornsHorns
RegionWestern mountainsWestern mountains
Typical weight250 lb250 lb
DietHerbivoreHerbivore

FAQ

Is a mountain goat a type of sheep?

No. It is not a true goat or a sheep. The mountain goat is a goat-antelope in its own genus, Oreamnos, most closely related to the chamois and serow of Europe and Asia.

Do female bighorns and mountain goats both have horns?

Yes. Nanny goats have black horns nearly as long as a billy's, though thinner. Bighorn ewes have short, slender brown horns that never form a ram's curl.

Which is better to eat, bighorn or mountain goat?

Most hunters rate wild sheep higher. Young goats taken before winter are excellent, but mature billies, especially after the rut, are tough and best ground or slow-cooked.

Can mountain goats and bighorn sheep live in the same place?

Yes. They share many ranges in the northern Rockies and Colorado, usually with goats on the steepest cliffs and sheep on the grassy slopes beside them.

Could you tell them apart from a few clues? Test yourself in today's puzzle.

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