Rule 34 Dev - ! 2018 2boys 4_toes 5_fingers ? animal_genitalia anthro balls balls_expansion biceps big_balls big_muscles big_penis blue_eyes canine caress claws conal_(character) dialogue duo english_text erection front_view fur furry furry_only fusion goo_transformation growth hair huff hybrid_penis hyper knot knotted_humanoid_penis koorivlf male mammal muscle_growth muscular muscular_male nipples no_humans nude open_mouth paws pecs penis reirun rubbing sequence sheath simple_background slime smile speech_bubble standing teeth thick_penis toes tongue transformation uncut vein veiny_penis wolf yaoi yellow_eyes|3236240256