FURVERT!

2013 4:5 abs animal_genitalia anthro balls biceps big_muscles big_penis biped black_nose blush bound canid canine canis chest_tuft collar erection fangs fur genitals grey_body grey_eyes grey_fur grey_hair hair humanoid_genitalia humanoid_penis kneeling male mammal muscular muscular_anthro muscular_male nipples nude pecs penis presenting pubes sheath simatukasa_(pixiv)simple_background sketch solo submissive submissive_male teeth tuft vein white_background white_body white_fur wolf