Rule 34 Dev - 2024 2boy 2boys abs ai_generated anal anal_sex animal_humanoid anthro anthro_on_human anthro_penetrating_human anus athletic athletic_male avaru balls biceps black_nose blush brown_hair canid canine canine_genitalia canine_penis canis christmas christmas_outfit christmas_tree claws couple domestic_dog duo erection freckles fur gay gay_anal gay_sex genitals hair human human_on_anthro humanoid humanoid_penis interspecies knot knotted_penis male male/male male_focus male_only male_penetrating mammal mammal_humanoid muscular muscular_male nipples nude on_lap open_mouth penetration penis pleasured santa_costume santa_hat sex size_difference smaller_male tagme testicles vein veiny_muscles veiny_penis white_fur white_pubes yaoi|13624090560