rule 34 4 toes 5 fingers ambiguous gender ambiguous species anatomically correct anatomically correct genitalia anatomically correct penis animal genitalia animal penis ankles tied anthro anus arms tied ass autofellatio balls belt belt bondage bondage bound canid canine canine penis canis claws countershade fur countershading duo erection eyebrows feet finger claws fingers autofellatio fur genitals hands tied head push hi res knot legs tied male maleambiguous mammal masturbation moan monochrome no humans oral oral masturbation oral penetration pawpads paws penetration penile penile masturbation penile penetration penis perineum simple background sleth solo focus speech bubble tied tail toe claws toes tongue tritscrits vein veiny penis wolf 5366315