CreatureData

Slevin's mouse

Peromyscus slevini Mailliard, 1924

CRCritically Endangeredrodents

The slevin's mouse (Peromyscus slevini) is a species in the family Cricetidae, order Rodentia. Recorded adults weigh 20.5 g to 108.6 g and live up to 7.95 years. Its IUCN Red List status is Critically Endangered.

Slevin's mouse (Peromyscus slevini)
Photo: L. Ernesto Pérez-Montes · CC0 · Wikimedia Commons

Quick facts about the slevin's mouse

Weight
20.5 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
4.62src for Young per litter or clutch
Age at maturity
60 dayssrc for Age at maturity
Litters or clutches a year
3.55src for Litters or clutches a year
Active
At night (nocturnal)src for Active
Lifestyle
Terrestrialsrc for Lifestyle
Conservation status
Critically Endangered (IUCN)src for Conservation status
Countries on record
Not recorded

Where does the slevin's mouse live?

Not recorded

What is the slevin's mouse?

Quoted from WikipediaCC BY-SA 4.0

Slevin's mouse (Peromyscus slevini), also known as the Catalina deermouse, 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 Isla Santa Catalina off the east coast of Baja California Sur, an island with an area of about 40 km2 (15 sq mi), and it is the only native mammal on the island. It is named for Joseph Slevin, a curator at the California Academy of Sciences.

Slevin's mouse is a large-bodied mouse, measuring about 21 cm (8.3 in) in total length, of which 10 centimetres (3.9 in) are the tail. They have pale cinnamon fur, mixed with dusky hairs, over the body, head, and flanks, with near-white underparts. They appear very similar to the related California mouse, but are paler in color and slightly larger. However, it may be most closely related to the North American deer mouse.

The species is threatened by competition with the introduced Northern Baja deer mouse, which was probably introduced by local fishermen.

From the Wikipedia article “Slevin's mouse” (en.wikipedia.org/w/index.php?title=Slevin%27s_mouse&oldid=1355941409), 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 slevin's mouse endangered?

The slevin's mouse is listed as Critically Endangered on the IUCN Red List: it faces an extremely high risk of extinction in the wild.

  1. LCLeast Concern
  2. NTNear Threatened
  3. VUVulnerable
  4. ENEndangered
  5. CRCritically Endangered
  6. EWExtinct in the Wild
  7. EXExtinct

Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Critically Endangered species. What the categories mean.

How is the slevin's mouse classified?

  1. kingdomAnimalia
  2. phylumChordata
  3. classMammalia
  4. orderRodentia
  5. familyCricetidae
  6. genusPeromyscus
  7. SpeciesPeromyscus slevini Mailliard, 1924
Other names and names in other languages (14)
  • Catalina deer mouseEnglish
  • Catalina deermouseEnglish
  • Catalina deermouseEnglish
  • Slevin’s mouseEnglish
  • Slevins's mouseEnglish
  • Slevins's mouseEnglish
  • Slevins's mouseEnglish
  • křeček SlevinůvCzech
  • Ratón de la isla Santa CatalinaSpanish
  • santacatalinanpeurahiiruFinnish
  • サンタカタリナシロアシマウスJapanese
  • Slevins WitvoetmuisDutch
  • myszak katalińskiPolish
  • Хомячок СлевинаRussian

Catalogue of LifeWikipediaiNaturalistWikidataIUCN Red List

Relatives of the slevin's mouse

Other species in the same genus Peromyscus.

LC, Least Concern
Cotton mouse (Peromyscus gossypinus)

Cotton mouse

Peromyscus gossypinus

Cricetidae

CompareSlevin's mouse vs White-footed mouseSlevin's mouse vs Eastern deer mouseSlevin's mouse vs Cactus mouseSlevin's mouse vs Cotton mouse

Common questions

Answered only where our data holds the answer.

How big is the slevin's mouse?

An adult slevin's mouse weighs 20.5 g – 108.6 g, according to values recorded on Wikidata.

Is the slevin's mouse endangered?

The slevin's mouse is listed as Critically Endangered on the IUCN Red List, meaning it faces an extremely high risk of extinction in the wild.

How long does the slevin's mouse live?

The slevin's mouse has a recorded lifespan of 7.95 years.

How long is the slevin's mouse pregnant?

The recorded gestation period is 26 days.

What kind of animal is the slevin's mouse?

The slevin's mouse (Peromyscus slevini) 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.

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APA

CreatureData. (2026). Slevin's mouse (Peromyscus slevini). Retrieved from https://creaturedata.com/animals/slevins-mouse

MLA

“Slevin's mouse (Peromyscus slevini).” CreatureData, 2026, https://creaturedata.com/animals/slevins-mouse.

BibTeX
@misc{slevins_mouse_2026,
  title = {Slevin's mouse (Peromyscus slevini)},
  author = {{CreatureData}},
  year = {2026},
  url = {https://creaturedata.com/animals/slevins-mouse},
  note = {Data as of 2026-11-11}
}