FURVERT!

2022 ang3l anthro anus back_muscles balls bdsm biceps black_and_white bondage bound bubble_butt butt canid canine canis cutaway domestic_dog ears_back erection feet foreskin genitals hands_tied male mammal monochrome muscular muscular_sub nude pecs penis penis_backwards perineum pit_bull pivoted_ears sex_swing simple_background solo submissive triceps uncertain wrist_strap