Throughout the world there have been reports that allege that cattle have been killed and mutilated under mysterious circumstances. The dead cattle have had all their blood drained from their body and various parts removed with surgical precision. Some researchers believe that the cattle mutilations are the result of extra terrestrials; while the skeptics believe it to be a case of satanic cults or natural predators.

A mutilated cow usually has a hole carved out of its' eye or rectum and various body organs have been removed i.e. heart, eyes, lips, reproductive organs, tongue, anus, udder, teats. The removal of body parts and the cutting of flesh and bone appears to be done with surgical precision and often the incisions have been cauterized. The precise removal of organs and cauterization of the mutilated carcasses has led some investigators to suggest that the perpetrators are using some form of laser. Investigators have reported a strange chemical smell associated with the mutilated cattle and the carcass being covered with a white powder. Equally puzzling is the fact that there are no tracts of predators, vehicles or footprints leading to or from the carcass. The lack of tracks or blood trails suggests that the cattle were taken to another location and killed. After being mutilated, the cattle were then dropped in the general area from where they were abducted.

At locations of cattle mutilations there are usually sightings of UFOs or unmarked black helicopters. Some ranchers have even reported seeing a UFO abducting the cattle in their fields. These UFO sightings and the surgical precision of the mutilations have led some researchers to believe that extra terrestrials are to blame. The researchers speculate that the extra terrestrials could use the removed cattle tissue and blood as food.

Skeptics contend that these cattle mutilations can be blamed on satanic cults and natural predators. They suggest that scavengers like ants and vultures go first for the softest dead tissue like the lips, eyes and rectum. They argue that once the cow's heart stops pumping the blood will flow to and coagulate in the lowest portion of the body giving it an appearance of being drained of all blood.

Ranchers have lost thousands of dollars from these cattle mutilations and local authorities have conducted extensive investigations. To this day the identity of the perpetrators and their reason for mutilating the cattle remains a mystery.