FURVERT!

4_artificial_limbs anal anal_penetration animal_genitalia animal_penis armor brozoi canid canine canine_genitalia canine_penis canis cybernetics cyborg dobermann dogborg domestic_dog duo feral genitals hi_res jux knotting long_tail lying machine maintenance male male/male mammal odd on_back penetration penile penile_penetration penis pinscher space space_station_13 spacecraft tail tail_coil vehicle wolf zero_gravity