FURVERT!

alternate_version_at_source anthro balls biped black_and_white blush canid canine embarrassed erection foreskin frillsby_and_gallsby gallsby genitals hi_res humanoid_genitalia humanoid_penis lawyerdog line_art male mammal monochrome motion_lines penis retracted_foreskin shaking shivering sitting sketch solo spread_legs spreading towel towel_only