Mount Lyell shrew

The Mount Lyell shrew (Sorex lyelli) is a species of mammal in the family Soricidae. It is named for Mount Lyell in Yosemite National Park, the area where the shrew has been most commonly found.

Range
It is endemic to a small area of the Sierra Nevada in California, United States. The range is located in Fresno, Mariposa, Mono, and Tuolumne counties between an elevation of 2100 - 3630 m. It is typically found in sub-alpine riparian areas near fast-running streams.

Description
The shrew is between 8.9 - 10 cm long and weighs 4 - 5 g. The skull contains 32 teeth.