Rule 34 Dev - anal anal_sex animal_genitalia animal_penis anthro antlers ass balls bell bernese_mountain_dog black_fur blush canid canine canine_penis canis christmas closed_eyes domestic_dog duke_corgi erection fur gay grin harness herding_dog hi_res hindpaw holidays horn knot licking licking_lips lying male male/male male_only mammal molosser mountain_dog muscular muscular_male mystikfox61 nude on_back pastoral_dog pawpads paws penetration penis ruska sex size_difference slightly_chubby small_dom_big_sub smile swiss_mountain_dog teeth tongue tongue_out welsh_corgi yaoi yellow_fur|3779774736