FURVERT!

2017 2d_animation animated animated_gif anthro anus backsack balls balls_deep big_breasts black_and_white bouncing_balls bouncing_breasts breasts butt canid canine canis castbound domestic_dog duo erection female female_penetrated frame_by_frame from_front_position genitals legs_up male male/female male_penetrating male_penetrating_female mammal mating_press monochrome nipples nude penetration penile penile_penetration penis penis_in_vagina perineum russell_(castbound)sex short_playtime vaginal vaginal_penetration vulva