Heck's macaque
Macaca hecki (Matschie, 1901)
The heck's macaque (Macaca hecki) is a species in the family Cercopithecidae, order Primates. Recorded adults weigh 5.46 kg to 9.07 kg and live up to 31.7 years. Its IUCN Red List status is Vulnerable.

Quick facts about the heck's macaque
- Weight
- 5.46 kg – 9.07 kgsrc for Weight
- Length
- Not recorded
- Lifespan
- 31.7 yearssrc for Lifespan
- Diet
- Frugivoresrc for Diet
- Longest recorded lifespan
- 37.6 years
- Main food
- Not recorded
- Habitat
- Not recorded
- Gestation
- 172 dayssrc for Gestation
- Young per litter or clutch
- 1src for Young per litter or clutch
- Age at maturity
- 3 years – 4.08 yearssrc for Age at maturity
- Litters or clutches a year
- 0.8src for Litters or clutches a year
- Active
- By day (diurnal)src for Active
- Lifestyle
- Scansorialsrc for Lifestyle
- Conservation status
- Vulnerable (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the heck's macaque live?
Not recorded
What is the heck's macaque?
Heck's macaque (Macaca hecki) is a macaque of Sulawesi, Indonesia. This Old World monkey is diurnal.
Heck's macaques live within groups of 10 to 15 individuals in home ranges of 100 hectares. The males leave the group they are born in when they become sexually mature and join other groups to avoid inbreeding. Although capable of climbing trees, Heck's Macaques spend most of their time on the ground looking for flowers, tubers, sprouts, insects, mollusks, and sometimes small vertebrates to consume.
From the Wikipedia article “Heck's macaque” (en.wikipedia.org/w/index.php?title=Heck%27s_macaque&oldid=1380908155), 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 heck's macaque endangered?
The heck's macaque is listed as Vulnerable on the IUCN Red List: it faces a high risk of extinction in the wild.
- LCLeast Concern
- NTNear Threatened
- VUVulnerable
- ENEndangered
- CRCritically Endangered
- EWExtinct in the Wild
- EXExtinct
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Vulnerable species.
How is the heck's macaque classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderPrimates
- familyCercopithecidae
- genusMacaca
- SpeciesMacaca hecki (Matschie, 1901)
Synonyms Macaca tonkeana hecki, Papio hecki
Other names and names in other languages (18)
- Heck s macaqueEnglish
- Heck’s macaqueEnglish
- Heck’s macaqueEnglish
- مكاك هيكيArabic
- makak HeckůvCzech
- HeckmakakGerman
- Heck-MakakGerman
- Macaco de HeckSpanish
- Macaque à crêteFrench
- Macaque de HeckFrench
- DiheIndonesian
- Macaco di HeckItalian
- ヘックモンキーJapanese
- Hecks MakaakDutch
- makak ciemnyPolish
- Macaco-de-HeckPortuguese
- Heck şebeğiTurkish
- 黑克獼猴Chinese
Relatives of the heck's macaque
Other species in the same genus Macaca.

Rhesus macaque
Macaca mulatta

Barbary macaque
Macaca sylvanus

Japanese macaque
Macaca fuscata

Crab-eating macaque
Macaca fascicularis

Lion-tailed macaque
Macaca silenus

Celebes crested macaque
Macaca nigra
CompareHeck's macaque vs Rhesus macaqueHeck's macaque vs Barbary macaqueHeck's macaque vs Japanese macaqueHeck's macaque vs Crab-eating macaque
Common questions
Answered only where our data holds the answer.
How big is the heck's macaque?
An adult heck's macaque weighs 5.46 kg – 9.07 kg, according to values recorded on Wikidata.
Is the heck's macaque endangered?
The heck's macaque is listed as Vulnerable on the IUCN Red List, meaning it faces a high risk of extinction in the wild.
How long does the heck's macaque live?
The heck's macaque has a recorded lifespan of 31.7 years.
How long is the heck's macaque pregnant?
The recorded gestation period is 172 days.
What kind of animal is the heck's macaque?
The heck's macaque (Macaca hecki) belongs to the family Cercopithecidae in the order Primates.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · 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 · 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 · 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 · 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 · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · 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).
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Heck's macaque (Macaca hecki). Retrieved from https://creaturedata.com/animals/heck-s-macaque
“Heck's macaque (Macaca hecki).” CreatureData, 2026, https://creaturedata.com/animals/heck-s-macaque.
@misc{heck_s_macaque_2026,
title = {Heck's macaque (Macaca hecki)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/heck-s-macaque},
note = {Data as of 2026-11-11}
}