FURVERT!

1:1 anal anal_penetration balls bathroom big_balls bodily_fluids canid canine canis clothing cum cum_inside cum_overflow domestic_dog duo feet genital_fluids genitals humanoid_genitalia humanoid_penis hybrid_genitalia hybrid_penis internal jockstrap knot knotted_humanoid_penis knotted_penis male male/male male_penetrated male_penetrating male_penetrating_male mammal murid murine nozomyarts penetration penis powder_traks public rat rodent sex toes toilet underwear underwear_sex vein veiny_knot veiny_penis