Arianus's rat
Rattus omichlodes (Misonne, 1979)
The arianus's rat (Rattus omichlodes) is a species in the family Muridae, order Rodentia. Recorded adults weigh about 70 g. Source checklists list it for 1 country: Australia. Its IUCN Red List status is Data Deficient.
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Quick facts about the arianus's rat
- Weight
- 70 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Herbivoresrc for Diet
- Main food
- Not recorded
- Habitat
- Not recorded
- Young per litter or clutch
- Not recorded
- Active
- At night (nocturnal)src for Active
- Lifestyle
- Terrestrialsrc for Lifestyle
- Conservation status
- Data Deficient (IUCN)src for Conservation status
- Countries on record
- 1 countrysrc for Countries on record
Where does the arianus's rat live?
Countries where Catalogue of Life checklists list the species. Many checklists carry no country data, so the list is often incomplete. It is not a range map.
The arianus's rat is listed for 1 country.
- Listed
- Not listed
The same countries as a list
Why a country list is not a range map
Listed by: ITIS (scope: global), through the Catalogue of Life.
What is the arianus's rat?
Arianus's rat (Rattus omichlodes), also known as Arianus' New Guinea mountain rat, is a species of rat native to the mountains of Papua Province, Indonesia.
From the Wikipedia article “Arianus's rat” (en.wikipedia.org/w/index.php?title=Arianus%27s_rat&oldid=1314160950), 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 arianus's rat endangered?
The arianus's rat is listed as Data Deficient on the IUCN Red List: it has too little data for its risk to be assessed.
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Data Deficient species. What the categories mean.
How is the arianus's rat classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderRodentia
- familyMuridae
- genusRattus
- SpeciesRattus omichlodes (Misonne, 1979)
Other names and names in other languages (7)
- Arianus New Guinea mountain ratEnglish
- Arianus' New Guinea mountain ratEnglish
- Arianus's New Guinea mountain ratEnglish
- Arianus’s New Guinea mountain ratEnglish
- Arianus’s ratEnglish
- ニューギニアヤマクマネズミJapanese
- szczur młakowyPolish
Relatives of the arianus's rat
Other species in the same genus Rattus.
Brown rat
Rattus norvegicus
Black rat
Rattus rattus
Polynesian rat
Rattus exulans
Ricefield rat
Rattus argentiventer
Summit rat
Rattus baluensis
Bush rat
Rattus fuscipes
CompareArianus's rat vs Brown ratArianus's rat vs Black ratArianus's rat vs Polynesian ratArianus's rat vs Ricefield rat
Common questions
Answered only where our data holds the answer.
How big is the arianus's rat?
An adult arianus's rat weighs 70 g, according to values recorded on Wikidata.
Where does the arianus's rat live?
Catalogue of Life checklists list the arianus's rat for 1 country: Australia. Checklist coverage is uneven, so the true range may be wider.
Is the arianus's rat endangered?
The arianus's rat is listed as Data Deficient on the IUCN Red List, meaning it has too little data for its risk to be assessed.
What kind of animal is the arianus's rat?
The arianus's rat (Rattus omichlodes) belongs to the family Muridae in the order Rodentia.
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 - 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). Arianus's rat (Rattus omichlodes). Retrieved from https://creaturedata.com/animals/arianuss-rat
“Arianus's rat (Rattus omichlodes).” CreatureData, 2026, https://creaturedata.com/animals/arianuss-rat.
@misc{arianuss_rat_2026,
title = {Arianus's rat (Rattus omichlodes)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/arianuss-rat},
note = {Data as of 2026-11-11}
}