FILE - This Thursday, March 16, 2017, file photo released by the Bannock County Sheriff's Office shows a cyanide device in Pocatello, Idaho, The cyanide device, called M-44, is spring-activated and shoots poison that is meant to kill predators. Environmental and animal-welfare groups have filed a lawsuit, Tuesday, April 4, 2017, claiming the U.S. government is violating the Endangered Species Act by allowing the use of two predator-killing poisons. (Bannock County Sheriff's Office via AP)
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