Rule 34 Dev - abs anthro balls biceps big_muscles big_penis biped circumcised crouching fur genitals hair half-erect hooves horn humanoid_genitalia humanoid_penis male muscular muscular_anthro muscular_male nipples nude open_mouth pecs penis pose presenting pubes simple_background solo thick_penis vein sudonym bovid bovine cattle mammal monochrome sketch|1786738870