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.
The shrew is between 8.9–10 centimetres (3.5–3.9 in) long and weighs 4–5 grams (0.14–0.18 oz). The skull contains 32 teeth.
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 2,100–3,630 metres (6,890–11,910 ft). It is typically found in sub-alpine riparian areas near fast-running streams.