Rule 34 Dev - 1male 2011 3d abs anthro balls bovine cattle cloven_hooves contrapposto digitigrade erection glans grey_background hand_on_butt hand_on_hip hand_on_penis hooved_fingers hooves horn humanoid_hands humanoid_penis looking_at_viewer male male_only mammal model model_sheet muscular muscular_male navel nipples nude penis pose realistic retracted_foreskin sculpt sidesack simple_background solo standing tail_tuft tergos thick_neck three-quarter_view tuft uncut vein veiny_muscles zbrush|2954710768