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1:1 2013 3_toes abs anal anal_masturbation anal_penetration anthro autopenetration balls barefoot biceps big_muscles biped bodily_fluids bone_frill broken_horn ceratopsian ceratopsid chasmosaurine claws dinosaur erection extreme_dinosaurs feet foreskin frill_(anatomy)genital_fluids genitals hindpaw horn humanoid_genitalia humanoid_penis male marginocephalian masturbation moan monochrome muscular muscular_anthro muscular_male nipples non-mammal_balls non-mammal_nipples nude open_mouth ornithischian partially_retracted_foreskin paws pecs penetration penis precum prehistoric_species raised_leg reptile scalie sketch soles solo spike_(extreme_dinosaurs)tail tail_fetish tail_in_ass tail_in_own_ass tail_insertion tail_masturbation tail_play toe_claws toes triceratops ukent