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Colorado Investigators Mystified by Dozens of Cattle Deaths

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Wolves? Bacteria? Bigfoot? Officials are “scratching our heads.”

This story was originally published by the Guardian and is reproduced here as part of the Climate Desk collaboration.

Investigators in Colorado have been left baffled after dozens of cattle inexplicably dropped dead in a remote corner of the state.

The mystery has triggered a wave of US press coverage, with the New York Post running a headline claiming: “Cattle slaughtered by mystery creature that left no tracks.”

About 40 cows and calves have been found dead near the town of Meeker, in northwest Colorado, in the past two months. Wolves were initially blamed for the deaths, but Colorado Parks & Wildlife officials have since said that only five of the deceased cattle showed wolf-related injuries.

The investigation has since focused on whether the cows could have been infected with a deadly bacteria, but postmortems have revealed no evidence of that, either. The saga is “perplexing,” Travis Black, CPW northwest region manager, told a parks commission in mid-November. “We’re scratching our heads a little bit. We don’t know exactly what has occurred up there.”

A rancher in Meeker first reported the deaths of 18 cattle in October. At the time, CPW officials thought wolves could have slaughtered the animals, but as the number of the dead continued to grow, it emerged that only five showed the hallmarks of a wolf attack, described by Black as “missing tails, bite marks on the hocks and flanks and hamstrings.” There was also no evidence that wolves had returned to their prey, which Black said was unusual.

The Denver Post reported that investigators have used sophisticated technology to determine if wolves are present in the area, including trail cameras and manned flights. The search has also included howling surveys, during which, according to the website All Things Nature, “biologists will stop periodically and howl, and then wait for a response.”

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