USDA dogs sniff out snakes
Striker, a U.S. Department of Agriculture brown tree snake detector dog, inspects an aircraft prior to departure April 30, 2015, at Andersen Air Force Base, Guam. All Department of Defense aircraft, household goods, vehicles and cargo are required to be searched prior to departure in order to prevent the establishment of the snakes in other regions. (U.S. Air Force photo by Senior Airman Katrina M. Brisbin/Released)

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Photo by: Senior Airman Katrina M. BrisbinReleased |  VIRIN: 150430-F-EP111-265.JPG