abs anthro balls biceps big_muscles black_nose blush bound brown_fur canine chain chest_tuft clenched_teeth collar cum cum_on_self cum_string cumshot erection eyes_closed fangs frown fur gay hands-free hentist hideo_katashi hideo_katashi_(character) leash looking_at_viewer male mammal muscles nipples nude orgasm pecs penis pose presenting rope sheath solo standing teeth toned tuft vein white_fur wolf