FURVERT!

annelid areola bald big_breasts big_penis bodily_fluids breasts busty_feral demon-man erection feral genitals greyscale gynomorph intersex monochrome monster nightmare_fuel nipples open_mouth penis penis_creature simple_background solo tail tail_genitals tail_penis tears transformation unusual_anatomy unusual_genitalia_placement unusual_penis_placement unusual_tail vein what what_has_science_done why worm