Japen rat
Rattus jobiensis Rümmler, 1935
The japen rat (Rattus jobiensis) is a species in the family Muridae, order Rodentia. Recorded adults weigh 200.9 g to 380 g. Its IUCN Red List status is Least Concern.
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Quick facts about the japen rat
- Weight
- 200.9 g – 380 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Herbivoresrc for Diet
- Main food
- Not recorded
- Habitat
- Not recorded
- Gestation
- 22.8 dayssrc for Gestation
- Young per litter or clutch
- 3.48src for Young per litter or clutch
- Age at maturity
- 3.52 monthssrc for Age at maturity
- Active
- At night (nocturnal)src for Active
- Lifestyle
- Terrestrialsrc for Lifestyle
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the japen rat live?
Not recorded
What is the japen rat?
The Japen rat (Rattus jobiensis) is a species of rodent in the family Muridae found only in Yapen, Biak-Supiori, and Owi islands of West Papua, Indonesia.
From the Wikipedia article “Japen rat” (en.wikipedia.org/w/index.php?title=Japen_rat&oldid=1381904236), 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 japen rat endangered?
The japen rat is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.
- 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 Least Concern species. What the categories mean.
How is the japen rat classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderRodentia
- familyMuridae
- genusRattus
- SpeciesRattus jobiensis Rümmler, 1935
Synonyms Rattus biakensis, Rattus leucopus jobiensis, Rattus owiensis
Other names and names in other languages (8)
- Yapen island ratEnglish
- Yapen island ratEnglish
- Yapen ratEnglish
- Yapen ratEnglish
- owinrottaFinnish
- ジョビエンクマネズミJapanese
- szczur zatokowyPolish
- Япенская крысаRussian
Relatives of the japen 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
CompareJapen rat vs Brown ratJapen rat vs Black ratJapen rat vs Polynesian ratJapen rat vs Ricefield rat
Common questions
Answered only where our data holds the answer.
How big is the japen rat?
An adult japen rat weighs 200.9 g – 380 g, according to values recorded on Wikidata.
Is the japen rat endangered?
The japen rat is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.
How long is the japen rat pregnant?
The recorded gestation period is 22.8 days.
What kind of animal is the japen rat?
The japen rat (Rattus jobiensis) 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). Japen rat (Rattus jobiensis). Retrieved from https://creaturedata.com/animals/japen-rat
“Japen rat (Rattus jobiensis).” CreatureData, 2026, https://creaturedata.com/animals/japen-rat.
@misc{japen_rat_2026,
title = {Japen rat (Rattus jobiensis)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/japen-rat},
note = {Data as of 2026-11-11}
}