2018 4_toes anthro barefoot biped black_nose brother brother_and_sister brown_eyes brown_fur brown_stripes brown_tail bull_terrier canine claws clothed clothing collar crop_top digital_media_(artwork) dog duo ear_piercing erection female fur g-string glans grey_bottomwear grey_clothing grey_shirt grey_topwear grey_underwear humanoid_penis kneeling leash letterbox male mammal multicolored_fur navel nimushka pawpads penis piercing pink_pawpads pink_penis rebecca_(hurst) royce_(hurst) shirt sibling sister striped_fur striped_tail stripes terrier toes twins two_tone_fur underwear white_claws