A litter of gray wolf pups has been spotted in Colorado -- the first evidence of wolves breeding in the state since trappers and hunters eradicated them in the 1940s. Sightings show two adult wolves with three pups, but there could be more, as a typical litter consists of four to six pups. Less than a year ago, voters narrowly passed a state ballot initiative to reintroduce wolves to western Colorado. Hunters and ranchers have opposed the effort, in part because they believe wolves might return without human help.

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