Brown deer mouse
Peromyscus megalops Merriam, 1898
The brown deer mouse (Peromyscus megalops) is a species in the family Cricetidae, order Rodentia. Recorded adults weigh about 66.2 g. Its IUCN Red List status is Least Concern.

Quick facts about the brown deer mouse
- Weight
- 66.2 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Carnivoresrc for Diet
- Main food
- Not recorded
- Habitat
- Not recorded
- Young per litter or clutch
- 1.9src for Young per litter or clutch
- Age at maturity
- 51 dayssrc 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 brown deer mouse live?
Not recorded
What is the brown deer mouse?
The brown deer mouse or brown deermouse (Peromyscus megalops) 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". It is endemic to Mexico.
From the Wikipedia article “Brown deer mouse” (en.wikipedia.org/w/index.php?title=Brown_deer_mouse&oldid=1313896446), 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 brown deer mouse endangered?
The brown 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 brown deer mouse classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderRodentia
- familyCricetidae
- genusPeromyscus
- SpeciesPeromyscus megalops Merriam, 1898
Synonyms Peromyscus auritus, Peromyscus comptus
Other names and names in other languages (9)
- Broad-faced deer mouseEnglish
- Broad-faced deermouseEnglish
- Broad-faced deermouseEnglish
- Brown deermouseEnglish
- Ratón pardoSpanish
- guerreronpeurahiiruFinnish
- オオメシロアシマウスJapanese
- myszak brązowyPolish
- Бурый хомячокRussian
Relatives of the brown 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
CompareBrown deer mouse vs White-footed mouseBrown deer mouse vs Eastern deer mouseBrown deer mouse vs Cactus mouseBrown deer mouse vs Cotton mouse
Common questions
Answered only where our data holds the answer.
How big is the brown deer mouse?
An adult brown deer mouse weighs 66.2 g, according to values recorded on Wikidata.
Is the brown deer mouse endangered?
The brown deer mouse is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.
What kind of animal is the brown deer mouse?
The brown deer mouse (Peromyscus megalops) 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). Brown deer mouse (Peromyscus megalops). Retrieved from https://creaturedata.com/animals/brown-deer-mouse
“Brown deer mouse (Peromyscus megalops).” CreatureData, 2026, https://creaturedata.com/animals/brown-deer-mouse.
@misc{brown_deer_mouse_2026,
title = {Brown deer mouse (Peromyscus megalops)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/brown-deer-mouse},
note = {Data as of 2026-11-11}
}