FURVERT!

anthro anus backsack balls bdsm body_writing bondage bound butt canid canine chastity_cage chastity_cage_only chastity_device chastity_device_only claws cross-eyed degradation english_text erection fox genitals good_boy half-closed_eyes hi_res kobaj lawkie legs_tied male mammal metal_chastity_cage narrowed_eyes nude open_mouth open_smile pawpads paws penis penis_backwards photo presenting presenting_hindquarters profanity raised_tail smile solo tail tally_marks text through_wall tongue tongue_out wearing_chastity_cage wearing_chastity_device western_tally_marks writing_on_butt