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Mountain lions create and maintain healthy deer & elk populations in Colorado.

Big Cats as Nature’s Check Against Disease

A summary of theoretical, empirical, and experimental evidence supporting predator cleansing of CWD in deer and elk herds by mountain lions and wolves.
by Jim Keen, D.V.M., Ph.D.

Mountain lions create and maintain healthy deer & elk populations in Colorado

“The risk of being attacked by a mountain lion in Colorado is similar to the risk of being struck by lightning on your birthday.”
— Josh Rosneau, mammologist, science educator and conservationist with the Mountain Lion Foundation

A Scientific Review of Mountain Lion Hunting and its Effects

Aggressive Trophy Hunting of Mountain Lions May Exacerbate Human Conflicts with Wildlife

This report examines the science behind mountain lion trophy hunting in the western U.S. Wildlife agencies claim this hunting helps control mountain lion populations and reduces conflicts with humans and livestock – recent research suggests otherwise.
by Jim Keen, D.V.M., Ph.D.

How mountain lion trophy hunting increases risks of human-lion conflicts