rule 34 2019 animal genitalia animal penis anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro balls biped black nose canid canine canine penis canis digital media artwork domestic duo erection faceless male female female focus female penetrated german shepherd green eyes herding hi res humanoid pussy knot male male penetrating mammal pastoral penetration penis pussy red penis sex sheldondober solo focus straight vaginal penetration wolf 3318403