▁in ▁males , ▁with ▁strong ▁effects ▁on ▁central ▁ar ous al ▁mechan isms . ▁ ▁The ▁connection ▁between ▁test oster one ▁and ▁sexual ▁ar ous al ▁is ▁more ▁complex ▁in ▁females . ▁Research ▁has ▁found ▁test oster one ▁levels ▁increase ▁as ▁a ▁result ▁of ▁sexual ▁cogn itions ▁in ▁females ▁that ▁do ▁not ▁use ▁h orm onal ▁contra ception . ▁Also , ▁women ▁who ▁particip ate ▁in ▁poly andr ous ▁relationships ▁have ▁higher ▁levels ▁of ▁test oster one . ▁However , ▁it ▁is ▁unclear ▁whether ▁higher ▁levels ▁of ▁test oster one ▁cause ▁increased ▁ar ous al ▁and ▁in ▁turn ▁multiple ▁partners ▁or ▁whether ▁sexual ▁activity ▁with ▁multiple ▁partners ▁cause ▁the ▁increase ▁in ▁test oster one . ▁In cons istent ▁study ▁results ▁point ▁to ▁the ▁idea ▁that ▁while ▁test oster one ▁may ▁play ▁a ▁role ▁in ▁the ▁sexual ity ▁of ▁some ▁women , ▁its ▁effects ▁can ▁be ▁obsc ured ▁by ▁the ▁co - ex istence ▁of ▁psych ological ▁or ▁affect ive ▁factors ▁in ▁others . ▁ ▁Other ▁animals ▁ ▁While ▁human ▁sexual ity ▁is ▁well ▁understood , ▁scient ists ▁do ▁not ▁completely ▁grasp ▁how ▁other ▁animals ▁relate ▁sex ually . ▁However , ▁current ▁research ▁studies ▁suggest ▁that ▁many ▁animals , ▁like ▁humans , ▁enjoy ▁sexual ▁relations ▁that ▁are ▁not ▁limited ▁to ▁reprodu ction . ▁Dol ph ins ▁and ▁bon ob os , ▁for ▁example , ▁are ▁both ▁well ▁known ▁to ▁use ▁sex ▁as ▁a ▁" social ▁tool ▁to ▁strength en ▁and ▁maintain ▁b onds ." ▁Eth olog ists ▁have ▁long ▁documented ▁the ▁ex changes ▁of