Rule 34 Dev - abs anthro bald_crotch ball_gag balls bdsm biceps big_penis biped bondage border bound flaccid frogtied gag gagged genitals hands_behind_back horn humanoid_genitalia humanoid_penis kneeling legs_tied looking_at_viewer male muscular muscular_anthro muscular_male nipples penis restraints rope rope_bondage rope_harness solo straps submissive submissive_male white_border amwulf mino bovid bovine cattle mammal 2013 hi_res|1704395245