A U.S. Department of Agriculture snake dog waits for his dental cleaning appointment July 9, 2015, at Andersen Air Force Base, Guam. The Andersen AFB Veterinary Treatment Facility is the only military quarantine center on island for incoming animals and has the second largest military working dog kennel in the Pacific region, encompassing Japan, Guam, Hawaii and Alaska. (U.S. Air Force photo by Airman 1st Class Alexa Ann Henderson/Released)