2013abstract_backgroundafevis_(character)al_krauseanalanal_penetrationanimal_genitaliaanimal_penisanthroanusbent_overbernese_mountain_dogblack_barsblack_hairblonde_hairblushbodily_fluidsbrown_bodybrown_furbuttcanidcaninecanine_genitaliacanine_peniscanischalkbunnyclawscollarcumcum_in_asscum_insidecum_while_penetrateddomestic_dogduoerectioneyes_closedfootprintfrom_behind_positionfurgenital_fluidsgenitalsgerman_shepherdhairherding_dogletterboxmalemale/malemale_penetratedmale_penetratingmale_penetrating_malemammalmarkingsmasturbationmolossermountain_dognudeopen_mouthorgasmpastoral_dogpawprintpawprint_(marking)pawprint_tattoopenetrationpenilepenile_masturbationpenispiercingsexsimple_backgroundswiss_mountain_dogtattootonguetongue_outupside_down_penis