Rule 34 Dev - 2boys abs agroalba ailurid ankle_cuffs anthro backsack balls big_balls big_penis black_nipples black_nose black_penis blindfold bondage bound bovid caprine docking duo erection fur goat handcuffs horn huge_balls huge_cock humanoid_penis hyper hyper_balls hyper_penis indi larger_male male male_only male_penetrated male_penetrating mammal medial_ring muscular muscular_male nipples nude open_mouth penetration penis penis_in_penis penis_urethra_bulge red_panda sex shackles simple_background size_difference smaller_male urethral urethral_bulge urethral_penetration urethral_sex xoury yaoi|3465015352