rule 34 animal genitalia animal penis anthro artist name blush bodily fluids brown body brown fur canid canine canine genitalia canine penis cheek tuft dark body dark fur dripping duo english text erection facial tuft front view fur genital fluids genitals glistening glistening eyes grey body grey fur grin head tuft hi res knee tuft leg tuft male mammal motion lines neck tuft nude penis penis tip precum precum drip red penis red tongue shoulder tuft shy size difference smile speech bubble standing text thought bubble tongue tuft yookie 7544229