FURVERT!

2013 3:4 amber_eyes animal_genitalia animal_penis anthro anus backsack balls bent_over big_butt biped black_hair black_penis brown_body butt butt_focus equid equine equine_genitalia equine_penis erection flared_penis genitals glistening hair hi_res horse looking_at_viewer looking_back looking_down low-angle_view male mammal muscular muscular_anthro muscular_male nude open_mouth penis perineum presenting presenting_hindquarters puffy_anus raised_tail rear_view ronin-nc seductive simple_background solo tail