Rule 34 Dev - 2016 3d abs achilles anal_penetration anal_sex animal_genitalia animal_penis balls biceps big_balls big_penis blonde_hair brown_fur brown_hair centaur chiron duo equine equine_penis equine_taur erection faceless_male forest fur hairy_chest hooves horse horsecock human human_on_taur humanoid hybrid interspecies larger_male legs_apart male male/male male_focus male_only mammal muscular nipples nude pecs penile_penetration penis pleasure_face priapus_of_milet quadruped romantic_couple sex size_difference solo_focus taur taur_penetrating taur_penetrating_human testicles the_education_of_achilles tree yaoi|2362780936