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animal_genitalia animal_penis black_and_white bound canid canine canine_genitalia canine_penis female feral fox fur gender_transformation genitals group hair hair_loss hi_res internal knot knotting male male/female mammal merge_transformation merging mirokuferral monochrome open_mouth penetration penis realization simple_background speech_bubble tongue tongue_out transformation trio vaginal vaginal_penetration vulva white_background