Pacific Biodiversity Institute

Pacific fisher: Scientists believe the Sierra Nevada fisher has been physically and genetically separated from the Siskiyou fisher on the Northwest Coast for more than 5,000 years.

Designations of protection can be state or federally issued. In the case of Yosemite National Park’s mammal species, the Sierra Nevada bighorn sheep is the only animal listed with the highest protections as federally and state endangered.

• Federally Endangered (FE)
• Federal Candidate (FC)
• State Endangered (SE)
• State Threatened (ST)
• California Species of Concern (CSC)

Sierra Nevada bighorn sheep—FE/SE
Pacific fisher—FC/CSC
Mount Lyell shrew—CSC
Pallid bat—CSC
Townsend’s big-eared bat—CSC
Spotted bat—CSC
Western red bat—CSC
Western mastiff bat—CSC
Sierra Nevada mountain beaver—CSC
Sierra Nevada snowshoe hare—CSC
Western white-tailed jackrabbit—CSC
Sierra Nevada red fox—ST
California wolverine—ST
American badger—CSC

• View a complete mammal species list.
• Read more about the biology of the Sierra Nevada red fox and the Califonia wolverine, which are both state threatened.
• Fill out a Wildlife Observation Card to report wildlife sightings to the park. [37.83 kb PDF]