rule 34 alleyballey ambiguousambiguous ambiguous gender animal genitalia animal penis anthro balls bathroom black body black fur blue body blue fur bodily fluids canine penis close up duo erection eyeless fangs felid fellatio fur genital fluids genitals glistening glistening genitalia glistening penis glory hole gradient background knot mammal open mouth oral pantherine penile penis precum public restroom restroom stall saliva saliva on penis saliva on tongue saliva string sex simple background teeth teeth visible tongue tongue out tongue visible unknown species vein zoom zoom in zoomed 5566091