Aswang is an umbrella term for various shape-shifting evil creatures in Filipino folklore, such as vampires, ghouls, witches, viscera suckers, and transforming human-beast hybrids (usually dogs, cats, pigs). The aswang is the subject of a wide variety of myths, stories, arts, and films, as it is well known throughout the Philippines. Spanish colonists noted that the aswang was the most feared among the mythical creatures of the Philippines, even in the 16th century. Although with no specific motive other than harming others, their behavior can be interpreted as an inversion of the traditional Filipino's values. The aswang is especially popular in southern parts of Luzon, and some parts of Mindanao and Visayas, especially the Visayan province of Capiz. Historical Accounts "The sixth was called silagan, whose office it was, if they saw anyone clothed in white, to tear out his liver and eat it, thus causing his death. This, like the preceding, was in the island of Catanduanes. Let no one, moreover, consider this a fable; because, in Calavan, they tore out in this way through the anus all the intestines of a Spanish notary, who was buried in Calilaya by father Fray Juan de Mérida. The seventh was called manananggal, and his purpose was to show himself at night to many persons, without his head or entrails. In such wise the devil walked about and carried, or pretended to carry, his head to different places; and, in the morning, returned it to his body—remaining, as before, alive. This seems to be a fable, although the natives affirm that they have seen it, because the devil probably caused them so to believe. This occurred in Catanduanes. The eighth they called osuang, which is equivalent to 'sorcerer;' they say that they have seen him fly, and that he murdered men and ate their flesh. This was among the Visayas Islands; among the Tagalos these did not exist." Fr. Juan de Plasencia, Customs of the Tagalogs (1589) Description and taxonomy According to Maximo Ramos, the term "aswang" can be thought of as an aggregate term for a multitude of Filipino supernatural creatures. These creatures can be organized into five categories that parallel creatures from Western traditions. These categories are the vampire, the self-segmenting viscera sucker, the weredog, the witch, and the ghoul. The vampire The vampire aswang disguises itself in the shape of a beautiful woman. It shares its diet of blood