The rasga mortalha is the Brazilian Portuguese name for the barn owl, Tyto alba, also called suindara, coruja branca, and coruja das torres. In local folklore its nighttime shriek, heard as fabric tearing, was linked to bad omens, which helped make the bird feared and famous. Recordings of the real call now circulate online as a horror and nature sound, shared for videos, games, and Halloween edits where a genuine owl scream is more disturbing than a made up effect.