Rule 34 Dev - 2016 abs animal_genitalia animal_penis anthro armpits belly biceps big_penis brown_fur bulge clothed clothing equine equine_penis erection fur hair horse horsecock looking_at_viewer male male_only mammal morning muscular muscular_male nipples nude open_mouth pecs penis pose sieg simple_background smile solo thick_penis topless trogan wood|2309411608