Long Valley Wolf Pack Confirms First Litter of Pups
Livestock owners in Sierra, Plumas, and Lassen counties should monitor their property as the new pack continues to expand.
Updated on Oct. 21, 2026 in Wildlife
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The Long Valley wolf pack produced its first confirmed litter of at least five pups, a milestone confirmed in August 2026. This development marks a growing presence for wolves across Sierra, Plumas, and Lassen counties.
Why it matters
The arrival of new litters reflects the ongoing expansion of the state wolf population, which impacts local livestock management and agricultural logistics. Property owners in these regions should monitor for potential wildlife interactions as pack territories continue to shift.
Biologists confirmed the Long Valley litter following 13 days of ground-capture operations and genetic testing. This pack is one of 10 active groups now monitored across the state.
The players
California Department of Fish and Wildlife
The state agency responsible for tracking wolf populations, managing wildlife conflicts, and overseeing livestock protection programs.
CA101
The breeding female wolf leading the Long Valley pack in the Sierra, Plumas, and Lassen county region.
The details
The California Department of Fish and Wildlife identifies the pack territory through a combination of trail-camera monitoring and genetic evidence collected from the field. To manage interactions, biologists have initiated ground-capture operations to collar individuals, which allows for closer tracking of pack movements and predatory behaviors. These efforts help officials distinguish between documented wolf activity and other wildlife incidents in the surrounding counties.
Timeline
December 28, 2011: Wolf OR7 arrived in California.
April 2026: The Long Valley group received official recognition as a wolf pack.
August 2026: Biologists confirmed the litter via footage and testing.
August 11 and September 3, 2026: Livestock injuries occurred in Sierra County.
The Home Front
The expansion of the Long Valley pack follows a decade of recovery that began with the arrival of wolf OR7 in 2011. This trend indicates that residents in rural mountain counties should maintain updated livestock protection plans to account for a growing apex predator population.
Rural property owners in Sierra, Plumas, and Lassen counties should ensure that livestock enclosures are secure and properly maintained. If you suspect wolf-related livestock injuries, contact your local wildlife office immediately to file an official report.
The takeaway
As wolf packs expand their range, property owners should prioritize non-lethal deterrents to protect their livestock. Maintain clear communication with your local fish and wildlife office to report any unusual animal activity or suspected losses on your property.
Further reading
Learn more about local predator management in our Wildlife section.
Source note: This article includes information reported by Themountainmessenger.
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