A new lawsuit aims to halt the wolf hunting seasons in Wisconsin and Minnesota, and put the gray wolf in the Western Great Lakes area back on the endangered species list.

Some wildlife conservation groups don't like that Minnesota and Wisconsin went ahead with wolf hunting seasons less than a year after the animal came off the federal endangered species list in the western Great Lakes region. A coalition, including the Humane Society of the U.S., has sued the Fish and Wildlife Service over its delisting of the gray wolf. Humane Society Wisconsin Director Alyson Bodai says hunting adds to other threats wolves face.

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Bodai says the Endangered Species Act requires that species fully recover their numbers across their traditional range before delisting, and she says wolves have not come back in several other states. Kurt Thiede, of the Wisconsin DNR, says it's disappointing to see wolf delisting go back to court again. He says if the wildlife groups win, killing of problem wolves would become more difficult, and it would block the state going ahead with its management plan that aims to reduce the wolf population, "so that would take away hunting and trapping to manage the population."

Thiede says if federal funding dries up, it would be harder for the state to reimburse farmers who lose livestock due to wolves. The Fish and Wildlife Service has 60 days to formally respond to the delisting lawsuit.