rule 34 2022 anthro balls belly belly tuft big tail birdpaw artist bodily fluids claws collar collar only digital media artwork dragon fur furred dragon genitals gesture glans grey body grey fur greyscale hair hair over eyes heart hi res horn humanoid genitalia humanoid penis leg tuft long tongue lying male monochrome nude on back penis pointing pointing at self saliva simple background solo speech bubble spots spotted body spotted fur spotted legs tail tail tuft tongue tongue out tuft vein veiny penis white background white body white fur 7260913