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#0463 · 🦊 mammals

Marsh Deer

🇳🇱 Moerashert ·Blastocerus dichotomus

VUvulnerable 🦊 Mammals 📍 outside Europe
Marsh Deer, photo 1 of 7
1/7 © Royle Safaris · CC BY-NC 4.0

what is it?

9 ft). It is found in Argentina, Bolivia, Peru, Brazil, Uruguay and Paraguay. Formerly found in much of tropical and subtropical South America, it ranged east of the Andes, south from the Amazon rainforest, west of the Brazilian Atlantic rainforest and north of the Argentinian Pampa. Today it is largely reduced to...

base stats

  • NL sightings 0iNaturalist, research grade
  • worldwide 2,163iNaturalist observations
  • threat VUvulnerable

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
  • 2,163 observations worldwide on iNaturalist.
  • Scientifically named by Johann Karl Wilhelm Illiger in 1815 (211 years ago).
  • Listed as Vulnerable on the IUCN Red List.

fact sheet

English
Marsh Deer
Nederlands
Moerashert
scientific name
Blastocerus dichotomus
class
Mammalia
order
Artiodactyla
family
Cervidae
IUCN Red List
VU · vulnerable
sightings in NL
0
sightings worldwide
2,163
GBIF records in NL
0
weight
—
length
—
lifespan
—
named
1815 by Johann Karl Wilhelm Illiger

IUCN in Dutch: kwetsbaar. Blank means the sources don't say.

relatives· Cervidae

Sources: iNaturalist taxon 42228, Wikidata Q504501, GBIF 2440963, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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