OSU Study Shows PTSD Symptoms in Cows after Wolf Attack - NBC Right Now/KNDO/KNDU Tri-Cities, Yakima, WA |

OSU Study Shows PTSD Symptoms in Cows after Wolf Attack

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A new study by Oregon State University says cows that survive a wolf encounter can suffer symptoms similar to post-traumatic stress disorder. A new study by Oregon State University says cows that survive a wolf encounter can suffer symptoms similar to post-traumatic stress disorder.

CORVALLIS, OR - A new study by Oregon State University says cows that survive a wolf encounter can suffer symptoms similar to post-traumatic stress disorder. 

OSU says the stress decreases pregnancy rates in cows, increases the number of lighter calves, and makes cows more likely to get sick. Weight loss in cattle can translate into a financial loss for ranchers.

In the study, researchers induced wolf stress by putting cows in a pen scented with wolf urine while playing recorded wolf howls on a stereo.

Oregon State University animal scientists Reinaldo Cooke and David Bohnert conducted the study, funded by the Oregon Beef Council and published in the Journal of Animal Science.

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