Rule 34 Dev - 5_fingers abs anthro balls biceps biped bodily_fluids cum erection fingers foreskin front_view genital_fluids genitals holding_penis horn humanoid_genitalia humanoid_hands humanoid_penis looking_at_another male masturbation muscular muscular_anthro muscular_male navel nipples nude pecs peeping penile penile_masturbation penis saggy_balls serratus simple_background snout solo standing tail tail_tuft tuft white_background window arjuna bovid bovine cattle mammal 2008 black_and_white graphite_(artwork) monochrome traditional_media_(artwork)|5902608845