Rape in nonhuman animal species: Definitions, evidence, and implications

Abstract

This paper examines the controversial issue of rape in nonhuman animal species. Many existing studies on nonhuman rape appear to suffer from inappropriate definitions and questionable interpretations. Many existing critiques of these studies are limited by their own misunderstandings of evolutionary theory. An attempt is made to reduce the resulting controversy by defining rape in a way that can be applied to nonhuman animals, without provoking unwarranted implications about human rape. Applying this definition to existing studies indicates that behavior meeting the definition of rape does exist in several nonhuman species. However, comparisons of these species do not provide clear implications for either proximate or ultimate explanations of human rape.