Gray Wolves, Canis lupus, Killed by Cougars, Puma concolor, and a Grizzly Bear, Ursus arctos, in Montana, Alberta, and Wyoming

Michael D. Jimenez, Valpa J. Asher, Carita Bergman, Edward E. Bangs, Susannah P. Woodruff


Four cases where large predators caused Grey Wolf (Canis lupus) mortality are recorded. We describe two incidents of Cougars (Puma concolar) killing Wolves in Montana and one incident of a Cougar killing a Wolf in Alberta. We report the first recorded incident of a Grizzly Bear (Ursus arctos) killing a Wolf in the western United States.


Gray Wolf; Canis lupus; Cougar; Puma concolor; Grizzly Bear; Ursus arctos; predation; interspecific interactions; Montana; Alberta; Wyoming

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