FURVERT!

2012 abs animal_genitalia animal_penis anthro balls biceps big_penis biped close-up equid equine equine_genitalia equine_penis erection genitals greyscale horse leaf low-angle_view male mammal monochrome morticus muscular muscular_anthro muscular_male navel nipples nude outside pecs penis penis_towards_viewer pose realistic sky solo standing vein veiny_muscles veiny_thighs worm's-eye_view