Rule 34 Dev - ! 2014 ? abs age_difference animal_genitalia anthro armpit_hair balls biceps big_penis black_fur boxers brown_hair canine canine_penis clothed clothing collaboration dialogue duo english_text erection facial_hair father father_and_son fellatio fur furry furry_only gay grey_fur hair half-dressed incest jock jock_slut knot locker_room long_hair male mammal moustache muscles nipples nude open_mouth oral parent pecs penis precum sex sheath shirt shorts son son_blowing_dad standing tank_top text tongue topless underwear wolf wolfblade yamato_iouko yamatoiouko zaos_(artist)|1883263184