Staff Sgt. Oohio, a Military Working Dog with the 31st Marine Expeditionary Unit, stands guard at the unit command post, Camp Hansen, Okinawa, Japan, Feb. 27, 2019. Oohio enjoys finding things, chasing stuff and biting bad guys when he's not on duty – on duty, as any Marine will tell you, he has no friends. (Official Marine Corps

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Size: 1732px × 1155px
Photo credit: © Nelly George / Alamy / Afripics
License: Licensed
Model Released: No

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