CreatureData

Kouprey

Bos sauveli Urbain, 1937

CRCritically Endangeredmammals

The kouprey (Bos sauveli), also called the grey ox or gray ox, is a mammal in the family Bovidae, subfamily Bovinae and tribe Bovini. It is a terrestrial, diurnal herbivore in the giant size class, with an adult body mass of 800 kg.

Kouprey (Bos sauveli)
Photo: The Royal Government of Cambodia · CC0 · Wikimedia Commons

Quick facts about the kouprey

Each litter has 1 young after a gestation period of 260 days, and sexual maturity is reached at 2.1 years. The kouprey is listed as Critically Endangered on the IUCN Red List, a threatened category, and its lifespan is given as 11.37 years, with values up to 20 years.

Weight
800 kgsrc for Weight
Length
Not recorded
Lifespan
11.4 years – 20 yearssrc for Lifespan
Diet
Herbivoresrc for Diet
Main food
Not recorded
Habitat
forestsrc for Habitat
Gestation
260 dayssrc for Gestation
Young per litter or clutch
1src for Young per litter or clutch
Age at maturity
2.07 yearssrc for Age at maturity
Active
By day (diurnal)src for Active
Lifestyle
Terrestrialsrc for Lifestyle
Conservation status
Critically Endangered (IUCN)src for Conservation status
Countries on record
Not recorded

Where does the kouprey live?

Not recorded

What is the kouprey?

Quoted from WikipediaCC BY-SA 4.0

The kouprey (Bos sauveli), also known as the forest ox and grey ox, is a possibly extinct species of forest-dwelling wild bovine native to Southeast Asia. It was first scientifically described in 1937.

The name kouprey is derived from the Khmer language and means "forest ox". The kouprey was defined as the national mammal of Cambodia in 2005.

The kouprey is listed as Critically Endangered and possibly extinct on the IUCN Red List. The last confirmed sighting of a wild individual took place in 1969.

From the Wikipedia article “Kouprey” (en.wikipedia.org/w/index.php?title=Kouprey&oldid=1377410821), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.

Is the kouprey endangered?

The kouprey is listed as Critically Endangered on the IUCN Red List: it faces an extremely high risk of extinction in the wild.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Critically Endangered species.

How is the kouprey classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classMammalia
  4. orderArtiodactyla
  5. familyBovidae
  6. genusBos
  7. SpeciesBos sauveli Urbain, 1937
Other names and names in other languages (20)
  • Gray oxEnglish
  • Grey oxEnglish
  • Grey oxEnglish
  • كوبريArabic
  • ثور رماديArabic
  • kuprejCzech
  • Toro CupreySpanish
  • kuupriFinnish
  • Boeuf gris CambodgienFrench
  • קופראיHebrew
  • コープレイJapanese
  • គោព្រៃKhmer
  • 코프레이Korean
  • 회색들소Korean
  • kuprej azjatyckiPolish
  • KupreyPortuguese
  • КупрейRussian
  • กูปรีThai
  • KuproTurkish
  • Orman Sığırı (Kupro)Turkish

Catalogue of LifeWikipediaiNaturalistWikidataIUCN Red List

Relatives of the kouprey

Other species in the same genus Bos.

EX, Extinct
Aurochs (Bos primigenius)

Aurochs

Bos primigenius

Bovidae

VU, Vulnerable
Gaur (Bos gaurus)

Gaur

Bos gaurus

Bovidae

Yak (Bos grunniens)

Yak

Bos grunniens

Bovidae

CR, Critically Endangered
Banteng (Bos javanicus)

Banteng

Bos javanicus

Bovidae

Gaur

Bos frontalis

BovidaeNo free photo yet

CompareKouprey vs AurochsKouprey vs GaurKouprey vs Wild yakKouprey vs Yak

Common questions

Each answer is written from the sourced facts on this page, and only where they hold the answer.

What kind of animal is the kouprey?

The kouprey is a mammal in the family Bovidae, subfamily Bovinae and genus Bos. It is also called the grey ox or gray ox.

How heavy is a kouprey?

An adult kouprey has a body mass of 800 kg, placing it in the giant size class (adult body mass over 250 kg).

What does the kouprey eat?

The kouprey is a herbivore.

Is the kouprey endangered?

Yes. The kouprey is listed as Critically Endangered (CR) on the IUCN Red List, which is a threatened category.

Is the kouprey extinct?

No. The Catalogue of Life lists the kouprey as living, not extinct.

How long does a kouprey live?

The kouprey's lifespan is given as 11.37 years, with values reported up to 20 years.

How many young does a kouprey have?

A kouprey has 1 young per litter, after a gestation period of 260 days.

Who named the kouprey?

The kouprey, Bos sauveli, was named by Urbain, 1937.

Sources and how to cite this page

Data as of 2026-11-11. How this page is put together.

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APA

CreatureData. (2026). Kouprey (Bos sauveli). Retrieved from https://creaturedata.com/animals/kouprey

MLA

“Kouprey (Bos sauveli).” CreatureData, 2026, https://creaturedata.com/animals/kouprey.

BibTeX
@misc{kouprey_2026,
  title = {Kouprey (Bos sauveli)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/kouprey},
  note = {Data as of 2026-11-11}
}