Catalina Deer Mouse
CR

Catalina Deer Mouse

Peromyscus slevini

Declining

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Slevin's_mouse

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Peromyscus slevini faces severe threats from its extremely restricted range on Catalina Island, making it vulnerable to catastrophic events and habitat degradation. Introduced species, particularly feral pigs and goats, have significantly altered the island's native vegetation structure and soil composition. Climate change poses additional risks through altered precipitation patterns and increased fire frequency, while the species' small population size makes it susceptible to genetic bottlenecks and demographic stochasticity.

Threat summary

Habitat

This endemic deer mouse inhabits the chaparral and oak woodland ecosystems of Santa Catalina Island off the California coast. It occupies areas with dense shrub cover and rocky outcrops, typically at elevations between sea level and 600 meters.

Other threatened species in CRICETIDAE

EN

Baker's Small-toothed Harvest Mouse

Reithrodontomys bakeri

Declining
CR

Puebla Deer Mouse

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Unknown
San Lorenzo DeermouseCR

San Lorenzo Deermouse

Peromyscus interparietalis

Declining
VU

Monserrat Island Deermouse

Peromyscus caniceps

Stable

Threatened in Mexico

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Turbinicarpus horripilus

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CR

Turbinicarpus mandragora

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Opuntia pachyrrhiza

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Arachnothryx tacanensis

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Frequently asked questions

Why is Catalina Deer Mouse classified as Critically Endangered?
Catalina Deer Mouse is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Peromyscus slevini faces severe threats from its extremely restricted range on Catalina Island, making it vulnerable to catastrophic events and habitat degradation. Introduced species, particularly feral pigs and goats, have significantly altered the island's native vegetation structure and soil composition. Climate change poses additional risks through altered precipitation patterns and increased fire frequency, while the species' small population size makes it susceptible to genetic bottlenecks and demographic stochasticity.
Where does Catalina Deer Mouse live?
Catalina Deer Mouse occurs in Mexico. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Catalina Deer Mouse?
The main threats to Catalina Deer Mouse are 8.1, ai-1, ai-2, and ai-3. The full IUCN-classified threat record for this species is detailed on the species page.

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