Wolf 907F: Yellowstone’s unyielding pack leader
Yellowstone National Park is a place where stories unfold across breathtaking landscapes, often told by the creatures that inhabit it. Among them, one wolf stood out for her resilience and leadership: 907F. As the oldest known wolf in Yellowstone at 11 years of age, she captivated park visitors, scientists, and enthusiasts worldwide, becoming a legend in her own right.
In the spring of 2024, 907F defied the odds once more by giving birth to her 10th litter. Her remarkable journey made her the most recognizable wolf in the park since the famed 06 female, 832F. Her story was one of survival, wisdom, and an unwavering commitment to her pack, the Junction Butte pack.
Sadly, 907F’s incredible life came to an end in December 2024 after a fight with the rival Rescue Creek pack, led by a former Junction member known as Gray Male. Her pack was ambushed and in the ensuing conflict, 907F sustained fatal injuries. Her passing marked the end of an era for the Junction Butte pack and Yellowstone’s wolf community.

Photo by Russ Kehler
A life of leadership
My journey with 907F began when she was just a young pup in Little America in the Lamar Valley, a vast area not far from the Junction Butte pack’s main den. Even then, she displayed qualities that set her apart. Over the years, I watched her navigate the tumultuous dynamics of her pack, emerging as a steady and dependable leader.
The Junction Butte pack’s hierarchy was always complex, particularly among the females. The female pack leader position often changed hands, creating tension within the group. When 907F and her sister, 969F, were old enough, they both vied for dominance. The sisters alternated as the female pack leaders with their rivalry keeping us on edge, especially during the birthing season each spring.
One year, 907F’s resilience shone through during a particularly challenging time. She was pregnant, while her sister 969F was not. This gave 969F free rein over the pack’s den area and their territory, effectively excluding 907F. I vividly remember a day when 969F stood at the east end of the valley, commanding the pack, while 907F stood alone to the west. Faced with hostility, 907F made the difficult decision to leave the area.
She turned to look south and west, hesitated for a moment, then lowered her head and walked into the wind, traveling toward a remote den far from her home. She was completely alone, yet her decision was a testament to her wisdom and determination. By choosing solitude, she ensured the safety of her pups, giving birth in peace. With the support of two loyal males, 996M and 1048M, she successfully raised three healthy pups that season. Her unwavering focus on her offspring and the well-being of the pack underscored her natural leadership.
A legacy of strength and sacrifice
907F’s ability to adapt and persevere was a cornerstone of her leadership. Like the legendary 06 female, 907F’s decisions appeared to me to always prioritize the pack’s stability. She embodied a steady hand, a trait that kept the Junction Butte pack together through numerous challenges.
Her bond with 1048M was particularly significant. Together, they formed a dependable partnership that anchored the pack. However, pack dynamics are ever-changing. When 907F reclaimed the leadership position, 1048M left to join the Mollie’s pack, marking the end of an era for the Junction Butte pack.
In her final months, the Junction Butte pack faced mounting pressures. Territorial disputes and the physical toll of aging had weakened its members. The Rescue Creek pack, now 21 wolves strong, posed a constant threat. A recent ambush left 907F limping on an injured front leg, slowing her down considerably. Her age and injuries made her vulnerable, yet she continued to fight for her pack until the end.
The wisdom of a survivor
Despite her passing, 907F remains a symbol of resilience. Her leadership provided a foundation for her pack, even in its most difficult moments. She understood the importance of nurturing the young, ensuring the pack’s survival and future strength. Her wisdom was evident in her decisions, which always reflected a deep commitment to the collective good.
As I reflect on 907F’s journey, I am reminded of her enduring spirit. She faced adversity with grace and determination, leading her pack through triumphs and trials. Her story is one of hope and perseverance, a testament to the incredible lives of Yellowstone’s wolves.
907F’s legacy will endure in the hearts of those who followed her story. She inspired countless visitors to Yellowstone, fostering a deeper appreciation for the intricate dynamics of wolf packs and the challenges they face in the wild. While her life has ended, her impact will be felt for years to come, a true testament to the unyielding spirit of Yellowstone’s wolves.
This article was originally published in the Spring 2025 edition of International Wolf magazine, which is published quarterly by the International Wolf Center. The magazine is mailed exclusively to members of the Center.
To learn more about membership, click here.
Laurie Lyman is avid wolf watcher in Yellowstone National Park and a writer with YellowstoneReports.com.

The International Wolf Center uses science-based education to teach and inspire the world about wolves, their ecology, and the wolf-human relationship.