rule 34 all fours ambiguous gender ambiguous knotting ambiguous penetrated ambiguous penetration anatomically correct anatomically correct genitalia anatomically correct penis animal genitalia animal penis anthro anthro on feral anthro penetrated biped bodily fluids brown body brown fur canid canine canine penis canis claws cum cum inside cutaway digitigrade gy style domestic duo ejaculation english text erection feral feral penetrating feral penetrating anthro from behind position fur genital fluids genitals german shepherd herding hi res internal kamelotnoah kelevra knot knotting male maleambiguous male lore male on anthro male on top male penetrating male penetrating ambiguous mammal motion lines mounting nude on bottom on top outside pastoral pawpads penetration penile penile penetration penis quadruped sex text toe claws zoophilia 5105362