FILE - This Thursday, March 16, 2017 file photo released by the Bannock County Sheriff's Office shows an M-44 cyanide device in Pocatello, Idaho It's spring-activated and shoots poison that is meant to kill predators. Environmental groups have petitioned the U.S. Agriculture Department to ban its use of the devices aimed at killing coyotes after one went off near a boy and his dog earlier this month, killing the dog. The petition filed late Tuesday, March 28, 2017 by the Western Watersheds Project and other groups starts a formal process to prevent the department from using the devices across Idaho and mandate existing device removal. (Bannock County Sheriff's Office via AP, File)
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