Rule 34 Dev - 2020 abs anthro balls big_penis canid canine canis erection foreskin genitals hi_res humanoid_genitalia humanoid_penis hybrid_genitalia hybrid_penis knot knotted_humanoid_penis male mammal muscular muscular_anthro muscular_male nipples nude pecs penis shiro_uzumaki solo utx-shapeshifter vein veiny_penis wolf|10330644576