Rule 34 Dev - 2014 avian balls barbs beak black_hair claws cygnovum erection feral glowing green_penis green_sclera green_tongue grey_feathers gryphon hair hybrid_penis knot looking_away male male_only naughty_face night open_mouth penis side_view slit_pupils smirk solo spots talons white_belly white_feathers wings zerolativity|1902271712