Rule 34 Dev - 2018 animal_genitalia animal_penis arctic_wolf ass ass_up balls black_fur black_nose canine canine_penis erection feline female feral feral_on_feral forest fur heart imminent_sex knot looking_back male mammal markings multicolored_fur open_mouth outside penis pink_fur presenting presenting_hindquarters pussy raised_tail red_fur rukifox side_view smile straight tree tsume_shiro two_tone_fur white_fur wolf|3049295264