Dr. Duane Kraemer, professor and researcher in the college of veterinary medicine poses with hogs, Thursday, May 8, 2008 at Texas A&M University in College Station, Texas. Dr. Kraemer is working on a animal contraceptive to be used on feral hogs. The oral contraceptive will be used to control the hog population in an effort to help farmers protect crops and land.(AP Photo/Paul Zoeller)

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