rule 34 2019 animal genitalia animal penis anthro balls biped black nose bodily fluids canid canine canis digital media artwork eyewear fluffy fur genital fluids glasses grey body grey fur grey sheath hair hi res licking licking lips long fur looking at viewer male male only mammal monitor nude penis penis tip precum sheath simple background sitting smile solo tongue tongue out tuft twymouse viss valdyr wolf 3469068