Tenacious, mysterious and maybe endangered — a wolverine roams the West

Four days before Christmas in 2008, a blur of brown fur scrambled along the snowy Continental Divide in Wyoming. The terrain and the conditions were brutal, food scarce. The bait a biologist placed in a wooden trap proved irresistible.

As soon as the creature crawled in, a signal alerted researchers miles away. They rode a snowmobile deep into the mountains, near Togwotee Pass, at an elevation of 9,380 feet. The temperature was 10 degrees.

Once there, the researchers confirmed the catch, summoned a veterinarian and sedated the animal with a dart. The vet made an incision in its abdomen and implanted an electronic transmitter.

Over time, that transmitter would help tell the story of a singularly tenacious representative of one of the West’s most elusive animals: the wolverine. Yet it also would demonstrate the limits of technology in solving the mysteries of the wild.

While biologists and bureaucrats debated whether to protect wolverines under federal law, arguing over climate change and its effect on a species believed to number fewer than 300 in the contiguous United States, the animal captured near Togwotee Pass would blaze an audacious and ultimately untraceable trail. Along the way, it made a cameo appearance in a court case that may help shape the fate of its species.

“If you had to put your finger on the one most interesting wolverine during our whole study,” said Bob Inman, the wildlife biologist who led the research project, “that was it.”

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