FURVERT!

2013 anatomically_correct anatomically_correct_genitalia anatomically_correct_penis animal_genitalia animal_penis anthro anus backsack balls bent_over big_penis black_penis brown_body brown_fur butt digital_media_(artwork)equid equine equine_anus equine_genitalia equine_penis erection feral fur genitals horse looking_at_viewer looking_through looking_through_legs male mammal muscular muscular_anthro muscular_male narse nude pecs penis presenting presenting_hindquarters puffy_anus rear_view sheath solo spread_legs spreading upside_down vein wide_eyed