FURVERT!

4:3 anthro anus backsack balls blush bodily_fluids canid canine codeine cum cum_in_vagina cum_inside duo erection felid female female_penetrated genital_fluids genitals greyscale heart_symbol male male/female male_penetrating male_penetrating_female mammal monochrome nude penetration penile penile_penetration penis penis_in_vagina rough_sex sex sketch sweat vaginal vaginal_penetration vulva