The Mongolian Death Worm's native name, Olgoi-Khorkhoi, means "intestine worm", due to its red blood-like color, and size, which is the size of an intestine. It has been described by many to be from 2-7 feet long, have the ability to spit out a corrosive yellow saliva and to generate blasts of electricity. However, this latter power is thought of as being folkloric by the nomads of the Gobi.
Mongolian nomads believe the giant worm covers its prey with an acidic substance that turns everything a corroded yellow color. Legend says that as the creature begins to attack it raises half its body out of the sand and starts to inflate until it explodes, releasing the lethal poison all over the unfortunate victim. The poison is so venomous that the prey dies instantly. Livestock and humans are supposed to be its main prey.
Because Mongolia had been under Soviet control until 1990, very little was known about the Death Worm in the West. Nobody is entirely sure what the worm actually is. Experts are certain it is not a real worm because the Gobi Desert is too hot an area for annelids to survive. Some have suggested it might be a skink, but they have little legs and scaly skin whereas witness accounts specify the worm is limb-less and smooth bodied.