July 12, 2011 – The Center reached a landmark agreement with the Fish and Wildlife Service compelling the agency to move forward in the protection process for 757 species, including the Ozark and eastern hellbenders.
January 31, 2013 – The Center and the Missouri Coalition for the Environment filed a formal notice of intent to sue the U.S. Forest Service and U.S. Fish and Wildlife Service over the agencies' failure to protect the Ozark hellbender, Hine's emerald dragonfly, Tumbling Creek cavesnail and two endangered mussels on Missouri's Mark Twain National Forest, where logging, road use and other activities are polluting waterways.
November 8, 2013 – A draft plan for management of the Ozark National Scenic Riverways released by the Park Service proposes improved waterway protections but falls short of taking the aggressive steps necessary to ensure the long-term survival of rare aquatic species like the endangered Ozark hellbender.
November 21, 2014 – A coalition of New York scientists, citizens and environmental groups — including the Center — filed a petition asking the New York Department of Environmental Conservation to award state endangered species protection to the eastern hellbender.
November 25, 2014 – The U.S. Forest Service finalized amendments to the management plan for Missouri's Mark Twain National Forest to protect rare and endangered species, including the Ozark hellbender.