Rule 34 Dev - 1boy 2019 animal_penis anthro ball_tuft balls ballsack big_belly big_penis black_sclera canine domestic_dog fluffy_tail green_eyes horns knot koorivlf koorivlf_tycoon male male_nipples male_only mammal masculine mature_male muscular_male nude_male penis post_transformation scrotum sketch slightly_chubby snout testicles weight_gain|3955595280