rule 34 2018 ambiguous gender ambiguous penetrated back spikes blue slime blue tentacles bodily fluids closed eyes cum cum from mouth cum in mouth cum inside cum leaking cum on face cum on tentacle curved horn dani1248 digital media artwork dragon ear frill facial markings feral frill anatomy genital fluids glowing glowing tentacles grey background head markings headshot portrait hi res horn ishiru male lore male only markings membrane anatomy membranous frill multicolored body multicolored scales multicolored skin neck markings open mouth oral oral penetration penetration portrait purple body purple frill purple nose purple scales purple skin scales scalie sharp teeth side view simple background slime smooth horn solo spikes spikes anatomy striped body striped neck stripes teeth tentacle tentacle around neck tentacle in mouth tentacle penetration two tone body two tone scales two tone skin vein veiny tentacles western dragon yellow body yellow horn yellow markings yellow scales yellow skin yellow spikes yellow stripes 4093110