Rule 34 Dev - 4_artificial_limbs abdominal_bulge all_fours bestiality bite biting_lip biting_own_lip blue_hair bodily_fluids breasts claws cybernetic_limb cybernetics digitigrade disability drooling duo ear_piercing fangs female female_on_feral female_penetrated feral feral_penetrating feral_penetrating_human feral_replacement_limb from_behind_position genitals hair human_on_feral human_penetrated interspecies knot larger_male machine male male/female male_on_human male_penetrating male_penetrating_female markings mounting nipples nude penetration penis piercing pinned prosthetic prosthetic_arm prosthetic_leg prosthetic_limb saliva self_bite sex size_difference smaller_female smaller_penetrated teeth tongue tongue_out translucent_body_parts doctorproxy canid canine canis cyborg domestic_dog human mammal 2015 hi_res|5732614265