In this photo taken Monday, Sept. 7, 2015, Sean Kelly, a South-African trainer of dogs and their handlers, briefs tracker dog handlers at the start of a training exercise in Akagera National Park, eastern Rwanda. (AP Photo/Ben Curtis)
In this photo taken Monday, Sept. 7, 2015, Sean Kelly, a South-African trainer of dogs and their handlers, briefs tracker dog handlers at the start of a training exercise in Akagera National Park, eastern Rwanda. (AP Photo/Ben Curtis)
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