Yosemite National Park's approximately 90 mammal species, and their behaviors, are truly fascinating for park visitors to observe safely and responsibly. Seventeen mammals have a special status by either the federal or California state governments due to declining population numbers or to a lack of information about their numbers and distribution. Ongoing research has put a magnifying lens on several mammal species within the park and continues to build on work in the 1920s by famous mammal researcher Joseph Grinnell.
Sierra Nevada Red Fox
A photo of a red fox padding atop a crest of snow in the far northern wilderness of Yosemite was proof that this creature is still alive.
Yosemite's wildlife staff have deployed motion-activated cameras in targeted locations to learn more about fishers and help them survive.