Rule 34 Dev - 2008 abs anthro athletic biceps black_nose blue_eyes briefs bulge canine collar erection erection_under_clothes fur furry grey_fur grey_hair inner_ear_fluff leash looking_back luka_(artist) male mammal multicolored_fur muscular open_mouth pecs pointy_ears sofa standing topless two_tone_fur underwear white_fur wolf yaoi|2405018032