rule 34 2018 4 toes 5 fingers animal genitalia animal penis anthro balls black fur black hair black nose black penis canine canine penis demon digitigrade erection eyebrows fangs fur hair half closed eyes knot looking at viewer lying male male only mammal marjani multicolored fur on front pawpads paws penis pose red eyes red fur sabertooth feature sharp teeth sheath simple background smile solo teeth toes two tone fur wolf 2799679