Water deer
Hydropotes inermis Swinhoe, 1870
The water deer (Hydropotes inermis), also called Vampire deer or Chinese water deer, is a mammal in the family Cervidae, subfamily Capreolinae, order Artiodactyla. It is a medium-sized, terrestrial herbivore of forest habitat, with adults weighing 14 kg and a cathemeral activity pattern.

Quick facts about the water deer
Gestation lasts 190 days, with reported values from 180 to 210 days, litters hold 3 young, and sexual maturity comes at 213.1 days. The IUCN Red List assesses the water deer as Vulnerable, a threatened category, and its lifespan is 12.95 years, with values up to 13.92 years.
- Weight
- 12.8 kg – 14 kgsrc for Weight
- Length
- Not recorded
- Lifespan
- 13 years – 13.9 yearssrc for Lifespan
- Diet
- Herbivoresrc for Diet
- Main food
- Not recorded
- Habitat
- forestsrc for Habitat
- Gestation
- 180 days – 210 dayssrc for Gestation
- Young per litter or clutch
- 3src for Young per litter or clutch
- Age at maturity
- 7 monthssrc for Age at maturity
- Active
- Day and night (cathemeral)src for Active
- Lifestyle
- Terrestrialsrc for Lifestyle
- Conservation status
- Vulnerable (IUCN)src for Conservation status
- Countries on record
- Not recorded
Photos of the water deer
Only freely licensed photos are shown. Each carries its creator and licence.







Where does the water deer live?
Not recorded
What is the water deer?
The water deer (Hydropotes inermis) is a small deer species native to Korea and China. It has prominent tusks, unlike all other living true deer. It was first described to the Western world by Robert Swinhoe in 1870.
From the Wikipedia article “Water deer” (en.wikipedia.org/w/index.php?title=Water_deer&oldid=1380778353), 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 water deer endangered?
The water deer 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 water deer classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderArtiodactyla
- familyCervidae
- genusHydropotes
- SpeciesHydropotes inermis Swinhoe, 1870
Synonyms Hydropotes affinis, Hydropotes inermis argyropus, Hydropotes kreyenbergi
Other names and names in other languages (45)
- Chinese water deerEnglish
- Vampire deerEnglish
- WaterhertAfrikaans
- Sjinese WaterhertAfrikaans
- أيل الماءArabic
- أيل الماء الصينيArabic
- أيل مصاص الدماءArabic
- venáu acuáticuAsturian
- Carw DwrWelsh
- Ceirw DwrWelsh
- VandrådyrDanish
- WasserehGerman
- Chinesisches WasserrehGerman
- WasserrehGerman
- Κινέζικο Ελάφι του έλουςGreek
- Ciervo acuático chinoSpanish
- Venado acuático chinoSpanish
- VesihirvEstonian
- vesikaurisFinnish
- HydropoteFrench
- Cerf d'eauFrench
- Chevreuil des maraisFrench
- Hydropote chinoisFrench
- Cervo acuáticoGalician
- Capriolo d'acquaItalian
- キバノロJapanese
- 고라니Korean
- 보노루Korean
- 복작노루Korean
- vannrådyrNorwegian Bokmål
- WaterreeDutch
- Chinese WaterreeDutch
- jelonkowiec błotnyPolish
- HidrópotePortuguese
- Водяной оленьRussian
- kitajski močvirski srnjakSlovenian
- vattenrådjurSwedish
- Su GeyiğiTurkish
- Водяний олень китайськийUkrainian
- 獐Chinese
- 水鹿Chinese
- 河麂Chinese
- 牙獐Chinese
- 麕Chinese
- 麞Chinese
Catalogue of LifeWikipediaiNaturalistTAXREFWikidataIUCN Red List
Relatives of the water deer
Other species in the same family Cervidae.

Moose
Alces alces

Reindeer
Rangifer tarandus

Red deer
Cervus elaphus

Roe deer
Capreolus capreolus

European fallow deer
Dama dama

Elk
Cervus canadensis
CompareWater deer vs MooseWater deer vs ReindeerWater deer vs Red deerWater deer vs Roe deer
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 water deer?
The water deer is a mammal in the deer family Cervidae, order Artiodactyla. It belongs to the subfamily Capreolinae and the genus Hydropotes.
How heavy is a water deer?
An adult Water deer weighs 14 kg, which places it in the medium size class.
What does the water deer eat?
The water deer is a herbivore.
What habitat does the water deer live in?
The water deer lives in forest habitat and is terrestrial.
Is the water deer endangered?
The water deer is listed as Vulnerable on the IUCN Red List, which is a threatened category.
How long does a water deer live?
The water deer has a lifespan of 12.95 years, with values up to 13.92 years reported.
How many young does a water deer have?
A water deer has 3 young per litter, after a gestation of 190 days.
Who named the water deer?
The water deer was named Hydropotes inermis by Swinhoe, 1870.
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). Water deer (Hydropotes inermis). Retrieved from https://creaturedata.com/animals/water-deer
“Water deer (Hydropotes inermis).” CreatureData, 2026, https://creaturedata.com/animals/water-deer.
@misc{water_deer_2026,
title = {Water deer (Hydropotes inermis)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/water-deer},
note = {Data as of 2026-11-11}
}