anthro balls biceps big_dom_small_sub bodily_fluids burrserk butt claws cum cum_in_pussy cum_inside dinosaur dominant duo erection extinct fangs female from_front_position genital_fluids genitals hair human interspecies kneeling lake larger_male male male/female male_penetrating mammal mastery_position mountain muscular nude on_top open_mouth outside pecs penetration penis prehistoric_species red_eyes red_hair reptile saliva scales scalie sex sharp_teeth sitting size_difference smaller_female standing straddling teeth theropod tongue tyrannosaurid tyrannosauroid tyrannosaurus tyrannosaurus_rex vaginal vaginal_penetration water wet