rule 34 2023 abstract background animal genitalia animal penis biped bodily fluids cetacean genitalia cetacean penis claws cloacal penis cum cum on penis digitigrade dinosaur erection feral finger claws frill anatomy genital fluids genitals green body green scales hi res long neck long tail looking back low angle view male membrane anatomy membranous frill open mouth orange body orange eyes orange scales penis phinja pupils rear view reptile saliva saliva string scales scalie shaded sharp teeth signature slit pupils solo spinosaurid spinosaurus striped body striped scales stripes tail tapering penis teeth theropod tongue 8168765