# Mountain goat (*Oreamnos americanus*)

Canonical page: https://creaturedata.com/animals/mountain-goat  
Data as of: 2026-11-11

The mountain goat (Oreamnos americanus), also called the Rocky mountain goat, is a mammal of the family Bovidae, subfamily Antilopinae, tribe Caprini. It is a large, terrestrial, diurnal herbivore, with a representative adult body mass of 72.5 kg and values up to 77.23 kg. Gestation lasts 182.6 days, it has 1 litter per year with 1.32 young per litter, and it reaches sexual maturity at 2.5 years. Its lifespan is 19.17 years, with values up to 20.8 years, and it is listed as Least Concern on the IUCN Red List, not an IUCN threatened category.

## Quick facts

| Fact | Value |
|---|---|
| Weight | 72.5 kg – 77.2 kg |
| Length | Not recorded |
| Lifespan | 19.2 years |
| Diet | Herbivore |
| Longest recorded lifespan | 20.8 years |
| Main food | Not recorded |
| Habitat | mountain |
| Gestation | 175 days – 183 days |
| Young per litter or clutch | 1.32 |
| Age at maturity | 2.5 years |
| Litters or clutches a year | 1 |
| Active | By day (diurnal) |
| Lifestyle | Terrestrial |
| Conservation status | Least Concern (IUCN) |
| Countries on record | Not recorded |

## Classification

- kingdom: Animalia
- phylum: Chordata
- class: Mammalia
- order: Artiodactyla
- family: Bovidae
- genus: Oreamnos
- species: *Oreamnos americanus* (Blainville, 1816)

Synonyms: *Antilope americana*, *Antilope americans*, *Antilope lanigera*, *Oreamnos americanus columbiae*, *Oreamnos americanus columbianus*, *Oreamnos americanus dorsatus*, *Oreamnos americanus kennedyi*, *Oreamnos americanus lanigera*, *Oreamnos americanus missoulae*, *Oreamnos americanus montanus*, *Oreamnos americanus sericeus*, *Rupicapra americana*

## Common questions

### What kind of animal is the mountain goat?

The mountain goat is a mammal in the family Bovidae, order Artiodactyla, placed in the subfamily Antilopinae and tribe Caprini.

### How heavy is a mountain goat?

An adult mountain goat weighs 72.5 kg, with values up to 77.23 kg reported by our sources.

### What does the mountain goat eat?

The mountain goat is a herbivore.

### Is the mountain goat endangered?

No. The mountain goat is listed as Least Concern on the IUCN Red List, which is not an IUCN threatened category.

### How long does a mountain goat live?

The mountain goat has a lifespan of 19.17 years, with values up to 20.8 years reported by our sources.

### How many young does a mountain goat have?

The mountain goat has 1.32 young per litter and 1 litter per year, after a gestation period of 182.6 days.

## Sources

- [An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles](https://doi.org/10.6084/m9.figshare.3563457.v1), CC0 1.0, E096-269. Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1
- [Catalogue of Life eXtended Release](https://www.checklistbank.org/dataset/316691), CC BY 4.0, 2026-10-16 XR. Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf
- [Wikimedia Commons](https://commons.wikimedia.org), per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed), 2026-11-11. Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence).
- [EltonTraits 1.0: species-level foraging attributes of the world's birds and mammals](https://doi.org/10.6084/m9.figshare.3559887.v1), CC0 1.0, 1.0. Wilman, H., Belmaker, J., Simpson, J., de la Rosa, C., Rivadeneira, M.M. & Jetz, W. (2014) EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95: 2027. https://doi.org/10.1890/13-1917.1. Data: https://doi.org/10.6084/m9.figshare.3559887.v1
- [Wikidata](https://www.wikidata.org), CC0 1.0, 2026-11-11. Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service).
- [Wikipedia (English)](https://en.wikipedia.org), CC BY-SA 4.0, 2026-11-11. Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).

Cite as: Mountain goat (Oreamnos americanus). Retrieved from https://creaturedata.com/animals/mountain-goat