e621 2012 all_fours anatomically_correct animal_genitalia animal_penis anus ass_up backsack balls black_fur black_nose butt canine canine_penis claws collar cum digitigrade erection feral fluffy fluffy_tail fox fur fyriwolf666 green_background green_eyes half-closed_eyes knot looking_at_viewer looking_back lying male mammal markings nude on_front penis perineum pose precum presenting presenting_hindquarters raised_tail rear_view red_fur simple_background smile socks_(marking) solo toe_claws white_fur

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reminds me of my picture, minus the penis and anal