This article aims to discuss the specific metaphor MULHER É PIRANHA, which is part of the general metaphor SER HUMANO É ANIMAL, besides the perspective role in its usage in song lyrics in Brazilian Portuguese, under the Conceptual Metaphor Theory. For this purpose, we discuss about metaphor and perspective according to Lakoff and Johnson (1980), followed by the cultural model The Great Chain of Being (LAKOFF; TURNER, 1989). We discuss about animal metaphors and its use, marking the notion of perspective, specially in the treatment given to animal metaphors related to women. We then do a metaphoric mapping and illustrate the points in the mapping with popular song lyrics. When the metaphor "piranha" is used to describe a man, it brings positive features, and we discuss about the cognitive reasons for so in the CMT. We argue that the conceptual metaphor MULHER É PIRANHA is modulated by perspective.