FURVERT!

1:1 against_natural_surface against_surface against_tree anal anal_penetration animal_genitalia animal_penis anthro balls belly big_balls big_penis black_and_white bottomless clothed clothing dominant duo equid equine equine_genitalia equine_penis erection forced genitals hooves horse jacket jacket_only knock-kneed larger_dom male male/male mammal monochrome musclegut muscular mustelid navel nude open_clothing open_jacket open_topwear otter otter_tail outside outside_sex pandottermon penetration penis plant raised_tail rape sex simple_background size_difference smile smiling_at_another smiling_at_partner standing standing_sex tail topwear topwear_only tree vein veiny_penis white_background