rule 34 2017 absurd res alternate version at source ambiguous gender ambiguous penetrated animal genitalia anthro anthro on feral anthro penetrating anthro penetrating feral avian beak big dom small sub biped bird border canid canine cloaca cloacal cloacal knotting close up closed eyes comic corvid corvus genus crow domination duo erection feral feral penetrated fox gender symbol genitals heart hi res internal knot knot root knotting lizardlars looking pleasured lying male maleambiguous male lore male domination male on feral male penetrating male penetrating ambiguous mammal on back on top oscine passerine penetration penis sex sexuality symbol size difference stated homosexuality stated sexuality symbol white border zoophilia 4475599