Mount Lyell shrew
Sorex lyelli Merriam, 1902
The mount lyell shrew (Sorex lyelli) is a species in the family Soricidae, order Eulipotyphla. Recorded adults weigh 4.4 g to 5 g. Its IUCN Red List status is Least Concern.
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Quick facts about the mount lyell shrew
- Weight
- 4.4 g – 5 gsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Invertivoresrc for Diet
- Main food
- Not recorded
- Habitat
- Not recorded
- Young per litter or clutch
- Not recorded
- Active
- Day and night (cathemeral)src for Active
- Lifestyle
- Terrestrialsrc for Lifestyle
- Conservation status
- Least Concern (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the mount lyell shrew live?
Not recorded
What is the mount lyell shrew?
The Mount Lyell shrew (Sorex lyelli) is a shrew (family Sorcidae) endemic to California and found in the central Sierra Nevada and Mono County at altitudes up to 3630 meters. It is named for Mount Lyell in Yosemite National Park, where a specimen was first collected in 1901. Observations of the Mount Lyell shrew have been rare, and a specimen was only first photographed live in 2024. The Mount Lyell shrew was the last known mammal in California to be photographed live. An adult Mount Lyell shrew grows to about 8.9 to 10cm in length, including its long tail. The Mount Lyell shrew is grey-brown and externally similar to other Sierran shrews, but is distinguishable because of the shape and coloration of its teeth. The Mount Lyell shrew has been found in varied habitats which are usually near a water source in high-elevation areas in the central Sierra Nevada and parts of the eastern Sierra, and as it has not been frequently observed, its behaviors, habitat, and range are still a topic of study.
From the Wikipedia article “Mount Lyell shrew” (en.wikipedia.org/w/index.php?title=Mount_Lyell_shrew&oldid=1380066832), 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 mount lyell shrew endangered?
The mount lyell shrew is listed as Least Concern on the IUCN Red List: it is not currently at risk of extinction.
- LCLeast Concern
- NTNear Threatened
- VUVulnerable
- ENEndangered
- CRCritically Endangered
- EWExtinct in the Wild
- EXExtinct
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Least Concern species. What the categories mean.
How is the mount lyell shrew classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderEulipotyphla
- familySoricidae
- genusSorex
- SpeciesSorex lyelli Merriam, 1902
Synonyms Sorex lyellz, Sorex tenellus lyelli
Other names and names in other languages (8)
- Lyell shrewEnglish
- Mt. Lyell shrewEnglish
- Mt. Lyell shrewEnglish
- rejsek lyellskýCzech
- lakipäästäinenFinnish
- ライエルトガリネズミJapanese
- Mount LyellspitsmuisDutch
- ryjówka kalifornijskaPolish
Relatives of the mount lyell shrew
Other species in the same genus Sorex.

Eurasian pygmy shrew
Sorex minutus

Common shrew
Sorex araneus

Laxmann's shrew
Sorex caecutiens

Eurasian least shrew
Sorex minutissimus

Alpine shrew
Sorex alpinus

Taiga shrew
Sorex isodon
CompareMount Lyell shrew vs Eurasian pygmy shrewMount Lyell shrew vs Common shrewMount Lyell shrew vs Laxmann's shrewMount Lyell shrew vs Eurasian least shrew
Common questions
Answered only where our data holds the answer.
How big is the mount lyell shrew?
An adult mount lyell shrew weighs 4.4 g – 5 g, according to values recorded on Wikidata.
Is the mount lyell shrew endangered?
The mount lyell shrew is listed as Least Concern on the IUCN Red List, meaning it is not currently at risk of extinction.
What kind of animal is the mount lyell shrew?
The mount lyell shrew (Sorex lyelli) belongs to the family Soricidae in the order Eulipotyphla.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - EltonTraits 1.0: species-level foraging attributes of the world's birds and mammals · CC0 1.0 · 1.0
Wilman, H., Belmaker, J., Simpson, J., de la Rosa, C., Rivadeneira, M.M. & Jetz, W. (2014) EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95: 2027. https://doi.org/10.1890/13-1917.1. Data: https://doi.org/10.6084/m9.figshare.3559887.v1 - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Mount Lyell shrew (Sorex lyelli). Retrieved from https://creaturedata.com/animals/mount-lyell-shrew
“Mount Lyell shrew (Sorex lyelli).” CreatureData, 2026, https://creaturedata.com/animals/mount-lyell-shrew.
@misc{mount_lyell_shrew_2026,
title = {Mount Lyell shrew (Sorex lyelli)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/mount-lyell-shrew},
note = {Data as of 2026-11-11}
}