FURVERT!

2020 animal_genitalia animal_penis animated animated_gif anthro balls becoming_erect big_penis blue_and_white dragon equid equine equine_genitalia equine_penis erection fully_sheathed genitals hi_res hooves horn horse huge_penis hybrid line_art long_penis maddworld male male_anthro mammal medial_ring monochrome muscular muscular_anthro muscular_male mythological_creature mythological_scalie mythology nude pecs penis scalie sheath short_playtime solo standing thick_penis throbbing throbbing_balls throbbing_penis unguligrade unsheathing vein veiny_penis