Zoophilia of bestiality is partly caused by irrational speciesism and anthropocentrism. Because interspecies sex occurs in nature, and because humans "are" animals, supporters argue that zoosexual activity is not "unnatural" and is not intrinsically wrong. Research has proven that non-human animals can and do have sex for non-reproductive purposes (and for pleasure). In 2006, a Danish Animal Ethics Council report concluded that ethically performed zoosexual activity is capable of providing a positive experience for all participants, and that some non-human animals are sexually attracted to humans (for example, dolphins). Some zoophiles claim that they are not abusive towards animals: "In other
Sex differences in humans the higher mobility of boys, accompanied by their lower rates of speech development in childhood, in comparison to girls. These different timings in maturation appear as sex differences in early age, and likely level off in later adulthood (Barbu, Cabanes, & Le Maner-Idrissi, 2011). This middle age – middle sex phenomenon might explain why meta-analytic reports and several experimental studies of verbal abilities and dominance using adult participants reported no sex differences. Statistics have been consistent in reporting that men commit more criminal acts than women. Self-reported delinquent acts are also higher for men than women across many different actions.