<3 anal anal_penetration animal_genitalia animal_penis balls balls_deep big_balls black_body black_fur blush bodily_fluids canine_ears canine_penis canine_teeth collar cum cum_in_ass cum_inside cum_on_ground doggystyle duo ears_back eyes_closed fangs fence feral floppy_ears from_behind_position fur genital_fluids genitals humping knot knotted looking_pleasured male male/male multicolored_body multicolored_fur neckerchief open_mouth outdoors penetration penis penis_tip pivoted_ears plant raised_leg sex sheath shrub size_difference tan_body tan_fur tongue tongue_out white_body white_fur director_seam bird_dog canid canine canis domestic_dog golden_retriever hunting_dog husky mammal nordic_sled_dog retriever siberian_husky spitz absurd_res hi_res
The boys Keith (husky) and Lou (Golden) doing what they do best. 

These are the characters from Minaga Tsukune's Doujinshies "More, More." and sequel "More, More, MORE!"