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2d_animation 5:4 anal anal_orgasm anal_penetration animated animated_gif anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro aquatic black_body black_scales cetacean clenched_teeth curly_hair dinosaur dolphin duo ejaculation facial_hair from_behind_position goatee green_body green_scales guide_lines hair hands-free lean_muscle male male/male male_penetrated male_penetrating male_penetrating_male mammal moan muscular muscular_male oceanic_dolphin orca orgasm orgasm_face overweight overweight_male penetration penile penile_penetration penis_in_ass prehistoric_species reptile saurischian scales scalie sex short_playtime sideburns sketch skinny slightly_chubby tail tail_motion teeth theropod thrusting tongue tongue_out toothed_whale trick_rex trick_rex_(character)tyrannosaurid tyrannosauroid tyrannosaurus tyrannosaurus_rex