Northwestern deer mouse
Peromyscus keeni (Rhoads, 1894)
The northwestern deer mouse (Peromyscus keeni) is a species in the family Cricetidae, order Rodentia. Recorded adults weigh 22.1 g to 108.6 g and live up to 7.95 years. Its IUCN Red List status is Least Concern.
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Quick facts about the northwestern deer mouse
- Weight
- 22.1 g – 108.6 gsrc for Weight
- Length
- Not recorded
- Lifespan
- 7.95 yearssrc for Lifespan
- Diet
- Carnivoresrc for Diet
- Longest recorded lifespan
- 8.33 years
- Main food
- Not recorded
- Habitat
- Not recorded
- Gestation
- 26 dayssrc for Gestation
- Young per litter or clutch
- 4.73src for Young per litter or clutch
- Age at maturity
- 60 dayssrc for Age at maturity
- Litters or clutches a year
- 3.2src for Litters or clutches a year
- 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 northwestern deer mouse live?
Not recorded
What is the northwestern deer mouse?
The northwestern deer mouse, northwestern deermouse, or Keen's mouse (Peromyscus keeni) is a species of rodent in the family Cricetidae. It is a species of the genus Peromyscus, a closely related group of New World mice often called "deermice".
From the Wikipedia article “Northwestern deer mouse” (en.wikipedia.org/w/index.php?title=Northwestern_deer_mouse&oldid=1359487816), 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 northwestern deer mouse endangered?
The northwestern deer mouse 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 northwestern deer mouse classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderRodentia
- familyCricetidae
- genusPeromyscus
- SpeciesPeromyscus keeni (Rhoads, 1894)
Synonyms Peromyscus hylaeus, Peromyscus maniculatus algidus, Peromyscus maniculatus beresfordi, Peromyscus maniculatus cancrivorus, Peromyscus maniculatus carli, Peromyscus maniculatus doylei, Peromyscus maniculatus interdictus, Peromyscus maniculatus keeni, Peromyscus maniculatus maritimus, Peromyscus maniculatus pluvialis, Peromyscus maniculatus rubriventer, Peromyscus maniculatus sartinensis, Peromyscus oreas, Peromyscus prevostensis, Peromyscus sitkensis, Peromyscus sitkensis isolatus, Peromyscus sitkensis oceanicus, Sitomys keeni, Sitomys macrorhinus
Other names and names in other languages (13)
- Keen's deer mouseEnglish
- Keen's mouseEnglish
- Keen's mouseEnglish
- Keens mouseEnglish
- Keen’s mouseEnglish
- Northwestern deermouseEnglish
- Northwestern deermouseEnglish
- Ratón del noroesteSpanish
- sitkanpeurahiiruFinnish
- vancouverinpeurahiiruFinnish
- souris de KeenFrench
- myszak alaskańskiPolish
- Ситханский хомячокRussian
Relatives of the northwestern deer mouse
Other species in the same genus Peromyscus.
White-footed mouse
Peromyscus leucopus
Eastern deer mouse
Peromyscus maniculatus
Cactus mouse
Peromyscus eremicus
Cotton mouse
Peromyscus gossypinus
Oldfield mouse
Peromyscus polionotus
California deermouse
Peromyscus californicus
CompareNorthwestern deer mouse vs White-footed mouseNorthwestern deer mouse vs Eastern deer mouseNorthwestern deer mouse vs Cactus mouseNorthwestern deer mouse vs Cotton mouse
Common questions
Answered only where our data holds the answer.
How big is the northwestern deer mouse?
An adult northwestern deer mouse weighs 22.1 g – 108.6 g, according to values recorded on Wikidata.
Is the northwestern deer mouse endangered?
The northwestern deer mouse is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.
How long does the northwestern deer mouse live?
The northwestern deer mouse has a recorded lifespan of 7.95 years.
How long is the northwestern deer mouse pregnant?
The recorded gestation period is 26 days.
What kind of animal is the northwestern deer mouse?
The northwestern deer mouse (Peromyscus keeni) belongs to the family Cricetidae 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 - 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). Northwestern deer mouse (Peromyscus keeni). Retrieved from https://creaturedata.com/animals/northwestern-deer-mouse
“Northwestern deer mouse (Peromyscus keeni).” CreatureData, 2026, https://creaturedata.com/animals/northwestern-deer-mouse.
@misc{northwestern_deer_mouse_2026,
title = {Northwestern deer mouse (Peromyscus keeni)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/northwestern-deer-mouse},
note = {Data as of 2026-11-11}
}