California’s gray wolf population has reached a modern high, with 55 wolves and nine packs confirmed alive by the end of 2025. The uptick is tempered by fewer breeding pairs, livestock losses tied to wolf packs, and ongoing scrutiny after several wolves died a
When California wildlife officials tallied the state’s gray wolves at the end of 2025, the number was unmistakably trending upward. A new annual report from the California Department of Fish and Wildlife puts 55 wolves confirmed alive and nine wolf packs in the state, a modern record.
The gains bring the wolf count up from 50 wolves and seven packs the year before, with most of the animals concentrated in the northeastern portion of California. Wildlife advocates pointed to the expansion as the kind of territory growth they want to see as recovery continues.
“More wolf packs and more new territories are exactly what we’d want for a wolf population that’s beginning to recover,” Amaroq Weiss, a senior wolf advocate at the Center for Biological Diversity, said.
But the year’s progress came with bruising setbacks—both for the wolf packs themselves and for the people who share their habitat.. The number of packs considered breeding pairs. defined as packs containing at least one adult male. an adult female. and two pups. fell from five in 2024 to three in 2025.
Part of the reason, the report says, was tied to unsuccessful litters in the Lassen and Yowlumni packs.. At the same time, state actions aimed at curbing livestock attacks also shifted the numbers.. In response to a spike in livestock attacks, California euthanized four wolves from the Beyem Seyo pack.
Livestock conflict remains a central pressure point.. In 2025, investigators opened 267 inquiries into wolf-livestock predation—up sharply from 74 the previous year.. Of the investigations opened last year. officials confirmed 198 livestock losses likely caused by wolves. including 90 attributed to the Beyem Seyo pack.. Sierra Valley ranchers reacted with outrage.
A study from UC Cooperative Extension put a price tag on those impacts, calculating that cattle attacks connected to the Beyem Seyo pack reached at least $2.6 million over just seven months of last year. That figure includes both the loss of livestock and interventions aimed at deterring attacks.
The report also records other wolf deaths in 2025 beyond the four euthanized by the state: two wolves died from vehicle strikes. three were found dead of unknown causes. and three additional deaths are under investigation.. The Center for Biological Diversity said it viewed the investigative posture as a sign officials suspect something more than accident or natural causes.
“The fact the department is investigating their deaths suggests they may have been illegally killed, but the agency has yet to release any details,” the center said.
That legal shadow matters because gray wolves are federally protected endangered species and illegal to kill in California. The state has set aside approximately $5.6 million since 2021 for programs that compensate ranchers for animals killed by wolves and support nonlethal deterrence methods.
The recovery story has been long and uneven. and the latest report underscores the tension between widening presence and fragile reproduction.. After wolves were hunted to extinction roughly a century ago. the last wild wolf known to call California home was shot in Lassen County in 1924.. Then, in 2011, OR-7—known as a plucky wolf—traveled into California from Oregon.. His stay was brief, but his offspring later returned and formed California’s first modern pack in 2015.
Since then, the population has increased steadily, drawing admiration from conservationists and frustration from ranchers.. Even with breeding pairs down in 2025. officials say the momentum isn’t purely stalled: three more wolf packs were identified in the first quarter of this year. raising hopes for the potential breeding pool.
Weiss framed that as part of what makes the moment worth celebrating. “Wolves are a part of California’s natural heritage,” Weiss said, “and their return is an amazing conservation story to celebrate.”
The numbers in the report line up in a clear sequence: fewer breeding pairs in 2025 (down from five to three) coincided with unsuccessful litters in Lassen and Yowlumni. alongside state euthanizing four wolves from the Beyem Seyo pack after a livestock-attack spike—while overall predation investigations surged to 267 and confirmed livestock losses totaled 198 likely due to wolves.
Wolves’ expanding role in the ecosystem is also a recurring theme in the state’s broader recovery narrative.. As apex predators. they are described as helping keep mid-level predators in check. protecting resources lower in the food chain and allowing vegetation. streamside habitat. and other wildlife to thrive.. In Yellowstone National Park. their return has been credited with reducing an overabundant elk population and helping decimated trees such as willows and aspen recover. which in turn brought back beavers and songbirds.
California gray wolves wolf population record breeding pairs livestock attacks Beyem Seyo pack OR-7 Lassen County Center for Biological Diversity