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4_toes 5_fingers abstract_background anthro anthro_on_anthro balls barely_visible_genitalia barely_visible_vulva biped canid canine canis countershade_torso countershading digitigrade dobermann domestic_dog duo erection eye_contact feet female fingers flat_chested front_view genitals gradient_background hand_on_hip hand_on_penis humanoid_genitalia humanoid_penis katlek looking_at_another male male/female mammal nipples nude on_one_leg outline penile penis pinscher simple_background size_difference smaller_female smile snout standing toes vulva