FURVERT!

2020 absurd_res anthro anus balls big_balls big_penis butt canid canine dark_penis darkened_genitalia darkened_penis genitals greyscale hi_res huge_penis humanoid_genitalia humanoid_penis kneeling male mammal monochrome muscular muscular_anthro muscular_male on_one_knee penis presenting presenting_anus rear_view solo stretching thick_penis vincethetiger