Rule 34 Dev - animal_genitalia animal_penis anus big_penis claws erection fangs feral genitals gorgonopsid inostrancevia looking_at_viewer looking_back looking_back_at_viewer male mammal-like_reptile open_mouth penis quadruped rear_view reptile solo soukosouji tail teeth therapsid tongue tongue_out unusual_anatomy unusual_genitalia unusual_penis|8201115648