2013abstract_backgroundanthroanusbacksackballsbent_overbipedblack_penisblue_eyesbuttdanzerflaccidfront_viewfull-length_portraitfurgenitalslooking_at_viewerlooking_backlooking_back_at_viewermalemammalmembrane_(anatomy)model_sheetmustelidnudeotterpenisplantigradeportraitposepresentingpresenting_hindquartersraised_tailrear_viewshiuksimple_backgroundsmilesolostandingtailthree-quarter_viewwebbed_hands