rule 34 animal genitalia animal penis anus ass avian balls beak better version at source big balls big butt bird black hair bodily fluids dripping equid equine equine genitalia equine penis erection european mythology eyebrows feral fur genital fluids genitals greek mythology grey body grey fur group gryphon hair hi res hippogriff cock looking at viewer looking back looking back at viewer male malemale mammal mane mcfan mythological avian mythology penis plover pluvian precum precum drip presenting presenting hindquarters puffy anus shorebird side by side tail tail tuft take your pick tan body tan fur thick eyebrows trio tuft 9120413