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animal_genitalia anthro balls big_muscles big_penis bodily_fluids body_size_growth brown_body brown_scales claws curled_forelegs deep_throat dinosaur duo english_text epicurean_delights erection expansion eyebrows eyes_closed feral genital_expansion genitals grey_body grey_scales growth growth_lines head_in_crotch huge_muscles huge_penis hyper hyper_genitalia hyper_muscles hyper_penis khan_(korboryn)larger_male larger_penetrated male male/male male_penetrated muscle_growth muscular muscular_feral muscular_male narrowed_eyebrows nude obscured_oral obscured_sex open_mouth oral oral_penetration orgasm oversized_fellatio oversized_oral pecs penetration penis penis_expansion prehistoric_species raised_eyebrows reptile saurischian scales scalie simple_background size_difference size_transformation sucked_silly sucking tail tail_around_leg teeth text theropod thick_penis thick_tail tongue transformation tube tyrannosaurid tyrannosauroid tyrannosaurus tyrannosaurus_rex vein veiny_muscles