Thread:Piisfun/@comment-35425114-20180705010751/@comment-30076690-20180705153331

Another serious training mistake was revealed later; the Soviets used their own diesel-engine tanks to train the dogs rather than German tanks which had gasoline engines.[5]  As the dogs relied on their acute sense of smell, the dogs sought out familiar Soviet tanks instead of strange-smelling German tanks.[7]

https://en.wikipedia.org/wiki/Anti-tank_dog