Rule 34 Dev - 3_horns anthro bdsm black_border border dominant_prey duo head_in_mouth horn leather male male/male multi_horn oral_fixation size_difference submissive_predator vore heskynn ceratopsian ceratosaurid compsognathid compsognathus dinosaur ornithischian pentaceratops prehistoric_species reptile scalie theropod monochrome|19291353340