Mongolian Death Worm

The Mongolian death worm (Mongolian: олгой-хорхой, olgoi-khorkhoi, "large intestine worm") is a creature alleged to exist in the Gobi Desert. The creature first came to Western attention as a result of Roy Chapman Andrews's 1926 book On the Trail of Ancient Man. The American paleontologist described second-hand tales of the monster that he heard at a gathering of Mongolian officials: "None of those present ever had seen the creature, but they all firmly believed in its existence and described it minutely."
The creature travels underground, creating waves of sand on the surface which allow it to be detected. It is said it can kill at a distance, either by spraying a venom at its prey or by means of electric discharge. It primarily lives and burrows underground, only rarely coming to the surface.
“It is shaped like a sausage about two feet long, has no head nor leg and it is so poisonous that merely to touch it means instant death. It lives in the most desolate parts of the Gobi Desert.” - Mongolian Prime Minister Damdinbazar, 1922.