FURVERT!

4_toes anthro balls bdsm black_body black_fur black_hair black_nose bondage bound box box_bondage butt canid canine canis cargo chastity_cage chastity_device container crate crazydonkey digitigrade dipstick_ears don't_touch ear_markings english_text feet fluffy fluffy_tail fur gag genitals glory_hole gradient_background green_ear_tips green_eyes green_markings green_pawpads green_penis hair helpless hi_res humiliation in_box in_container looking_up male mammal markings metal_chastity_cage multicolored_ears muzzle_(object)muzzle_gag muzzled nude pawpads penis pollux_(polluxthewolf)presenting presenting_hindquarters sex_box sign simple_background slave solo stuck_in_box submissive submissive_male tail text three-quarter_view through_wall toes wolf wood_crate