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Wolves 105F [Alpha Female of Buffalo Fork]

"The only radio- collared wolf, female #105, died in May, likely due to an attack from wolves in the Rose Creek pack, as her carcass was well within their territory."

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Wolf 42F (Alpha Female of the Druid Pack)

"All of the 31 originally reintroduced wolves are dead. The last to die was wolf #41F, originally of the Druid Peak pack, who was shot in a control action east of the park. She had a severe case of mange at the time of death. The last wolf to die in the park was her sister, #42, who was with the Druid Peak pack when she was killed by wolves from Mollie’s pack in late January 2004. All wolves currently alive in the population are descendants of reintroduced wolves."

"Number 42 died of natural causes on February 1, 2004. Her remains were found at the west end of Specimen Ridge, near a bull elk carcass. It appeared that other wolves had killed her, probably Mollie’s pack, whose territory centers around Pelican Valley"

"The Druid and Mollie’s wolves likely encountered each other at the carcass site and fought. Nearly nine years old at the time of her death, #42 was the last of the original Canadian wolves still living in the park. When another of #42’s sisters  [41F] died in Sunlight Basin two weeks after #42, all of the original reintroduced wolves were dead."

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Wolf 206M (Possible Alpha Male of Swan Lake)

"Swan Lake wolf #206M, the possible alpha male, was killed by other wolves in the heart of Swan Lake territory in March 2004. It is possible that he was killed by pack mates, as no other wolf packs were known to be in the area at the time of his death."

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Alpha Female of Nez Perce (48F)

In the park interior, the founding member and longtime alpha female of the Nez Perce pack was killed by the Gibbon Meadows pack. At age nine, she was the oldest known wolf in the population. The pack dissolved shortly after her death.

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Wolf 375F [Daughter of "Casanova"] (Druid)

"In 2005, the Slough Creek pack expanded its territory into Lamar and Soda Butte valleys, displacing the Druid Peak pack from territory they’d held since 1996. The resulting clashes led to the death of Druid wolf #375F and contributed to the Druid Peak pack’s decline to just four wolves."

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Wolf 496F (Mollie's)

"#496, a yearling female, was probably killed by the Hayden Valley pack"

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Wolf 377M and Wolf 489M (Slough Creek)

See the inset story of the Annual Report of 2006 for the long-story. They were killed by the "Unknown Pack".

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Wolf 542F (Yellowstone Delta)

"An ARGOS GPS radio collar was placed on an adult female, #542, in early February, but she was killed by Mollie’s pack when she, and possibly other pack members, made a trip to Mary Bay, at the edge of the Mollie’s pack’s territo- ry. GPS data from the alpha male’s collar in Mollie’s pack placed that wolf precisely at the same location as #542F. This, in addition to a eld necropsy, suggests that the cause of death was other wolves. "

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"As in previous years, the leading cause of mortality (59%) among collared wolves was intraspecific strife"

(10 out of 17 deaths)

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Wolf 534M (Alpha Male of Leopold) and Wolf 591F

"It is likely that they [Mount Everts Pack] contributed to the demise of the Leopold pack when they killed the alpha male  [534M] and possibly others."

"Trespasses by both the Oxbow Creek and Mount Everts packs likely resulted in the death of at least two Leopold wolves: subordinate #591F in August and alpha #534M in September."

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Wolf 589F (Oxbow Creek)

"In September, during a routine wolf tracking flight, Wolf Project staff observed the Agate Creek pack chasing the Oxbow Creek pack and killing #589F."

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Wolf 643F and 644F (Agate Creek)

"Interpack clashes resulted in the death of #643F and #644F during separate encounters with the Druid Peak pack."

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Alpha Wolf  380F, Beta 526F, 630F, 631F and uncollared female yearling (Slough Creek)

"Five wolves (beta #526F, alpha #380F, yearling #631F, yearling #630F, and an uncollared female yearling) were later killed by other wolves."

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The "Casanova" (302M) (Alpha Male of Blacktail)

"Nine-year-old #302M was killed by other wolves (probably the Quadrant Mountain pack)."

"On the morning of October 8, #302M’s collar switched to mortality mode. His body was found a few miles south of Swan Lake, at the very edge of Blacktail pack territory.

Outward signs of injury were minimal but hemorrhaging was extensive beneath his hide, with many wolf-sized bite wounds. 

It is unknown what wolves were responsible; however, the area borders on Quadrant Mountain pack territory. The Quadrant pack had a carcass nearby and it is possible #302M visited the carcass either alone or with only a few pack mates. 

With two very large males, the Quadrants may have found #302M and a fight ensued. 

Wolf #302M was able to get away but his injuries were too extensive and he died sometime in the early morning hours. Small wolf tracks around his body suggested that at least a few of his six-month old pups stayed with him for some time. By the end of 2009, the Blacktail pack numbered five adults and four pups. The position of alpha male was assumed by #302M’s nephew, a large gray called “Big Brown.” [later collared as 778M]. No doubt the wisdom, sagacity, and judgment taught by #302M will enable the Blacktail pack to continue their success. "

Wolf #302M’s extraordinary life provided us with a magnitude of insight into the lives of Yellowstone wolves. Every time #302M was observed hunting prey, howling to other wolves, chasing coyotes, or feeding his pups, it was documented and led in the Wolf Project of ce. In so many ways, his life has spoken volumes.

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Wolf 632F aka "Tripod" (Cougar Creek) 

"The female from Cougar Creek (#632) had at least two pups that survived, but she died late in the year, probably killed by other wolves."

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Wolf 694F (694F's Group)

"During the denning season the pack [Cottonwood Creek] attacked an unnamed trio of wolves denning near Slough Creek and killed the alpha female (collared #694, formerly of Druid Peak pack), at least two pups, and possibly another uncollared wolf."

"Alpha wolf #694F and the black male remained together and denned near Slough Creek. On April 14, the five-member Cottonwood Creek pack, led by alpha #527F, killed #694F in her den. 

Two of the days-old pups were observed being carried out and consumed by the Cottonwood females. Upon inspection, it was noted that #694F’s den was under boulders and had two entrances, enabling the Cottonwood wolves to attack and overwhelm #694F from both sides."

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Wolf 569F (Druid Alpha Female)

"After leading the pack for three years, #569F was killed by other wolves (suspected to be from the Hoodoo pack outside YNP in Wyoming) in the Lamar River backcountry."

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Wolf 697M (682M Group)

"On the last day of the year, #697M was killed by Mollie’s pack near the Cache Creek/Lamar River confluence."

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Wolf 691F (Druid), Thin Female, White Line (761F) and Wolf 756F (Druid)

"Three-year-old #691F was attacked by the Silver pack and died under one of the Lamar Buffalo Ranch Yellowstone Association Institute cabins.

The two-year-old, “ Thin Female,” was fatally wounded while scavenging a Blacktail Deer Plateau pack carcass. 

Three-year-old “White Line” (761F) fought with the Lamar Canyon alpha female at a kill site and was later killed in the same area, possibly by wolves or a mountain lion."

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Wolf 472F (Alpha Female of Agate Creek)

 "In early December, long-time alpha female #472F was found dead in the Lamar River near its confluence with Slough Creek. Evidence suggests she was killed by members of the Blacktail Deer Plateau pack, which may have included her daughters #693F and #642F. Originally born in the Druid pack in 2001 [2000 with new genetic evidence] , #472F was one of the oldest females in the park and leaves behind a significant legacy on the northern range."

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Wolf 586M (Mollie's) & Wolf 715F (Alpha), 641M (Alpha) and 775M (Agate Creek)

"As 2011 progressed, mortality resulting from intraspecific conflicts had a marked impact on Agate Creek pack structure. 

Regular trespasses by the Blacktail, Lamar Canyon, and Mollie’s packs during fall and early winter resulted in the death of four collared wolves (alpha female #715, alpha male #641, #586M, and #775M) and the possible death of three others"

"In early winter, the pack [Lamar Canyon] likely interacted with the neighboring Blacktail Deer Plateau and Agate Creek packs; one encounter ended with a fatal attack on the Agate Alpha Female."

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Wolf 636M (Alpha Male of Mary Mountain)

"In early December, Mollie’s pack traveled to Hayden Valley where they encountered the Mary Mountain pack and killed the alpha male #636. The tracking plane arrived just minutes after this interaction occurred and observed #636M dead in snow covered with blood and Mollie’s pack leaving the area about a half-mile away. "

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Canyon Pup

"A female pup was killed by the Blacktail Plateau pack when the Canyon pack ventured into Mammoth in late December."

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"Big Gray" (925M) (Alpha Male of Lamar Canyon) (2015)

"In early 2015, alpha male 925M was killed by the Prospect Peak pack"

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"Puff" or Wolf 911M (Junction Butte) (2016)

"Alpha male 911M was killed by the Prospect Peak pack"

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Wolf 821F (Prospect Peak) (2017)

"Long-time alpha female 821F was killed by other wolves, possibly the Junction Butte pack, just a few weeks after giving birth. Likely her pups all died and her death left the pack with no working radio-collars."