Animalia > Chordata > Mammalia > Artiodactyla > Bovidae > Oreamnos > Oreamnos americanus

Oreamnos americanus (mountain goat; Rocky Mountain goat)


Wikipedia Abstract

The mountain goat (Oreamnos americanus), also known as the Rocky Mountain goat, is a large hoofed mammal endemic to North America. A subalpine to alpine species, it is a sure-footed climber commonly seen on cliffs and ice. Despite its vernacular name, it is not a member of Capra, the genus that includes all other goats, such as the wild goat, Capra aegagrus, from which the domestic goat is derived.
View Wikipedia Record: Oreamnos americanus

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 10.5
EDGE Score: 2.44


Adult Weight [1]  220.073 lbs (99.823 kg)
Birth Weight [2]  7.055 lbs (3.20 kg)
Female Weight [1]  180.002 lbs (81.647 kg)
Male Weight [1]  260.001 lbs (117.934 kg)
Weight Dimorphism [1]  44.5 %
Diet [3]  Herbivore
Diet - Plants [3]  100 %
Forages - Ground [3]  100 %
Female Maturity [2]  2 years 6 months
Male Maturity [2]  2 years 6 months
Gestation [2]  6 months 4 days
Litter Size [2]  1
Litters / Year [2]  1
Maximum Longevity [2]  21 years
Snout to Vent Length [4]  4.756 feet (145 cm)
Weaning [2]  4 months 2 days


Protected Areas

Prey / Diet

Abies lasiocarpa (Subalpine fir)[5]
Pinus ponderosa (Ponderosa pine)[5]
Vaccinium scoparium (grouse whortleberry)[5]
Xerophyllum tenax (Indian Basket Grass)[5]

Prey / Diet Overlap


Ursus arctos (Grizzly Bear)[6]


Range Map

External References

NatureServe Explorer


Attributes / relations provided by
1Alaska Wildlife Notebook Series, Alaska Department of Fish and Game
2de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
4Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
5Oreamnos americanus, Chester B. Rideout and Robert S. Hoffman, MAMMALIAN SPECIES No. 63, pp. 1-6 (1975)
6Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
7Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2023-06-13; License: CC BY 4.0