Rule 34 Dev - 1boy 2020 anthro anthro_only anthro_penetrated black_hair bovine bovine_humanoid bovine_penis brown_background brown_fur buff bull commission cum fur furry furry_only green_eyes horn horns looking_at_another male male_only mammal mammal_humanoid mrkatman muscles muscular muscular_male naked nude nude_male penis piercing pubic_hair short_hair silver_ring smile smiley_face smiling teeth tied_legs|4069783224