FURVERT!

abs animal_genitalia animal_penis anthro balls biceps big_knot big_penis blush bull_terrier butt canid canine canine_genitalia canine_penis canis domestic_dog erection genitals hi_res hunting_dog julius_(tush)knot light male mammal muscular muscular_anthro muscular_male nipples nude obliques one_eye_closed pecs penis pose serratus solo sunlight terrier triceps tush_(artist)vein wink