anus blue_eyes claws detailed_background doggystyle dragon_tail duo equine_anus female feral feral_on_feral from_behind_position golden_eyes green_body green_scales hooves horn knot lake large_penetration larger_male male male/female membrane_(anatomy) membranous_wings mountain_range nature open_mouth penetration pivoted_ears scales sex sharp_teeth shoulder_grab side_view size_difference slippery_tongue smaller_female smaller_feral teeth vaginal vaginal_penetration wings nightdancer dragon equid equine green_dragon mammal unicorn full-length_portrait hi_res portrait