rule 34 2023 anatomically correct anatomically correct genitalia anatomically correct penis animal genitalia animal penis balls bodily fluids brown body brown fur canid canine canine genitalia canine penis canis collar collar only cum cum on ground cumshot digital media artwork domestic ejaculation erection feral fur genital fluids genitals german shepherd grey nose herding hi res knot kodaac licking licking lips licking own lips looking at viewer male mammal nude open mouth open smile orgasm pastoral penis precum quadruped self lick sheath smile solo tail tan body tan fur teeth tongue tongue out whiskers 8693061