FURVERT!

4:5 4_toes 5_fingers absurd_res against_natural_surface against_surface against_tree animal_genitalia animal_penis anthro anthro_on_anthro balls black_body black_claws black_fur black_hair blue_body blue_eyes blue_fur blue_hair blue_markings bound canid canine canine_genitalia canine_penis canis claws clenched_teeth digital_media_(artwork)digitigrade duo erection evening eye_contact facial_markings feet fingers fire forest fur genitals grass grey_body grey_fur growling hair head_markings hi_res hive43 holding_penis inner_ear_fluff knot looking_at_another looking_at_partner male male/male mammal markings matt_wolf multicolored_body multicolored_fur orange_eyes penile penis plant red_penis restrained rope slate_(thecomposingwolf)standing tail teeth tied_to_tree toe_claws toes tree tuft wolf