The Lassen Pack is California’s only current wolf pack, and its second modern wolf pack. (Its predecessor, the Shasta Pack, is missing and presumed dead.)

The pack’s female, LAS01F, was first spotted by trail camera in August 2015. In February 2016, biologists saw tracks that appeared to show two wolves traveling together. One of them was a male, CA08M, determined to have been born into Oregon’s Rogue Pack in 2014, making him one of the pups in OR-7’s first litter. The female was collared in late June 2017. Genetic testing shows she is not closely related to Oregon wolves; she likely dispersed from the northern Rocky Mountains.

Four pups were born in 2017. At least three of them survived into 2018, when the breeding female had another set of pups, at least two of which are known to have survived. The Lassen family raised four pups for 2019. See here, or below, for incredible video. Don’t forget to turn the sound up – baby wolves practicing their howls may just melt your heart.

The breeding male has not been detected since spring 2019, and the breeding female has been spotted with a black male wolf that had been seen in the area.

As of early 2020, the pack has at least 6 members. These are thought to include the breeding female, a subadult, and either 3 or 4 of 2019’s pups. The single male wolf who has been spotted in the Lassen territory may have joined the pack.

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Current Numbers: 1 or 2 adults, 3-4 pups from 2019

Pack Status: Designated

Family Members



3-4 pups from 2019

unknown number of pups, yearlings, and/or subadults traveling with the family



This remote video capture shows a female adult, a yearling, and three pups walking through coniferous woods in Lassen County. At 1:00, the pups can be heard yipping and then howling. CDFW video.


Three-month old wolf pups investigate their world while their mother, LAS01F, is on a hunting foray 5 miles away. CDFW video.

Collared breeding female wolf, LAS01F, and the breeding male heading out from their rendezvous site to hunt. CDFW video.

Wolf pup investigating a field camera it found. CDFW video.

For More Information

CDFW Gray Wolf Page

The Lassen Pack