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4:3 ambiguous_gender animal_genitalia animal_penis anthro ass_up bodily_fluids canid canine canine_genitalia canine_penis canis cum cum_on_back cum_on_face cumshot domestic_dog duo ejaculation erection fangs felid female genital_fluids genitals hair husky knot la_brea larger_male lying male male/female mammal masturbation nevaro_blackfang nordic_sled_dog nude on_front orgasm penile penile_masturbation penis prehistoric_species saber-toothed_tiger sabertooth_(anatomy)size_difference smaller_female spitz tail teeth tongue tongue_out xenoforge