FURVERT!

2009 abs animal_genitalia animal_penis anthro athletic balls biceps big_penis blue_eyes canid canine canine_genitalia canine_penis canis crouching erection fangs fur genitals grin holding_knot holding_own_knot holding_own_penis holding_penis knot male mammal masturbation muscular muscular_anthro nipples nude pecs penile penile_masturbation penis pose presenting smile solo teeth vein wolf yuki-chi