Ubir or Вупкăн is a mythological or folkloric being in Turkic mythology who subsist by feeding on the life essence of living creatures, regardless of whether it is undead person or being. Ubirs were usually reported as bloated in appearance, and ruddy, dark in colour; these characteristics were often attributed to the recent drinking of blood. The causes of vampiric generation were many and varied in original folklore. In Turkic and Slavic traditions, any corpse that was jumped over by an animal, particularly a dog or a cat, was feared to become one of the undead. Ubirs are reanimated corpses that kill living creatures to absorb life essence from their victims. Tales ofsupernatural beings consuming the blood or flesh of the living have been found in nearly every culture around the world for many centuries. Almost every nation has associated blood drinking with some kind of revenant or demon, or in some cases a deity. A story is told about blood drinking in the Epic of Ural-Batyr. Once when the parents were gone hunting, Shulgen was challenging Ural to drink the blood of animal at home, that was left by parents. Ural refused to do it. Then Shulgen drank the blood himself. Parents cursed their son Shulgen and rejected him.
The word has parallels in many Slavic languages: Czech and Slovak upír, and upiór, Ukrainian упир , Russian упырь , Belarusian упыр , from Old East Slavicупирь . The exact etymology is unclear. Among the proposed proto-Slavic forms are ǫpyrь and ǫpirь'. Another, less widespread theory, is that the Slavic languages have borrowed the word from a Turkic term for Ubır or Ubar "witch". Czech linguist Václav Machek proposes Slovak verb "vrepiť sa", or its hypothetical anagram "vperiť sa" as an etymological background, and thus translates "upír" as "someone who thrusts, bites". An early use of the Old Russian word is in the anti-pagan treatise "Word of Saint Grigoriy", dated variously to the 11th–13th centuries, where pagan worship of upyri is reported. Common Slavic belief indicates a stark distinction between soul and body. The soul is not considered to be perishable. The Slavs believed that upon death the soul would go out of the body and wander about its neighbourhood and workplace for 40 days before moving on to an eternal afterlife. Thus pagan Slavs considered it necessary to leave a window or door open in the house for the soul to pass through at its leisure. During this time the soul was believed to have the capability of re-entering the corpse of the deceased. Much like the spirits mentioned earlier, the passing soul could either bless or wreak havoc on its family and neighbours during its 40 days of passing. Upon an individual's death, much stress was placed on proper burial rites to ensure the soul's purity and peace as it separated from the body. The death of an unbaptized child, a violent or an untimely death, or the death of a grievous sinner were all grounds for a soul to become unclean after death. A soul could also be made unclean if its body were not given a proper burial. Alternatively, a body not given a proper burial could be susceptible to possession by other unclean souls and spirits. Slavs feared unclean souls because of their potential for taking vengeance. From these deep beliefs pertaining to death and the soul derives the invention of the Slavic concept of Ubır''. A vampire is the manifestation of an unclean spirit possessing a decomposing body. This undead creature needs the blood of the living to sustain its body's existence and is considered to be vengeful and jealous towards the living. Although this concept of vampire exists in slightly different forms throughout Slavic countries and some of their non-Slavic neighbours, it is possible to trace the development of vampire belief to Slavic spiritualism preceding Christianity in Slavic regions. These applications are similar to the Turkish culture.
