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| Subspecies: | Unknown |
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| Est. World Population: | |
| CITES Status: | NOT LISTED |
| IUCN Status: | Critically Endangered |
| U.S. ESA Status: | NOT LISTED |
| Body Length: | |
| Tail Length: | |
| Shoulder Height: | |
| Weight: | |
| Top Speed: | |
| Jumping Ability: | (Horizontal) |
| Life Span: | in the Wild |
| Life Span: | in Captivity |
| Sexual Maturity: | (Females) |
| Sexual Maturity: | (Males) |
| Litter Size: | |
| Gestation Period: | |
Habitat:
The island topography is composed of rocky hillsides separated by wide and narrow sandy arroyos (dry creeks) bearing the typical Sonoran Desert vegetation. This species occurs mainly in heavily-vegetated arroyos, but can also be found on rocky and scrubby hillsides, beneath roots and rocks or even in open areas of sandy soils. It is mainly nocturnal and can be easily found and caught. Most of its diet (70%) is composed of the endemic mouse Peromyscus slevini, the only ground mammal species on the island.
Range:
This species is endemic to Isla Santa Catalina, a 40 km2 island in the Gulf of California, off the coast of Loreto, in Mexico (Campbell and Lamar 1989).
Conservation:
Although cats have been eradicated from the island, there is a need to ensure that they do not recolonize Isla Santa Catalina. There is a need to monitor populations and to prevent over-collection of this restricted range species.