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abs anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro balls biped canid canine claws countershade_face countershade_torso countershading dinosaur duo erection eyebrows foreskin fox genitals hair hi_res humanoid_genitalia humanoid_penis interspecies male male/male male_penetrated male_penetrating male_penetrating_male mammal muscular muscular_anthro muscular_male pecs penetration penis prehistoric_species red_body reptile saurischian scalie sex silvius_(draethon)size_difference smaller_penetrated tail theropod toumator18 tyrannosaurid tyrannosauroid tyrannosaurus tyrannosaurus_rex zoma