Yes, that’s a real dog, and no, the photo isn’t doctored. During World War II the Soviets experimented with “anti-tank dogs,” dogs that were trained to run under enemy tanks with explosives strapped to their backs.
Unfortunately, the Soviets trained the dogs by putting food under their own tanks, which led to some Three-Stooges-style hijinks on the battlefield. In 1942, an entire Soviet tank division was chased into retreat by its own dogs. Serves ’em right.