FURVERT!

4:5 anal anal_penetration anthro balls belly biceps big_balls big_penis black_nose canid canine canis claws clenched_teeth clothed clothing domestic_dog duo erection foreskin fur genitals grey_body grey_eyes grey_fur grey_hair gtskunkrat_(character)hair hi_res huge_penis humanoid_genitalia humanoid_penis kneeling komboochie larger_male low-angle_view male male/male male_penetrated male_penetrating male_penetrating_male mammal manly mature_male murid murine musclegut muscular muscular_arms muscular_male nipples nude partially_retracted_foreskin paws pecs penetration penis pink_nose pose rat relaxing rodent sex side_view simple_background size_difference smaller_male spread_legs spreading standing teeth thick_penis vein veiny_penis whiskers white_hair