FURVERT!

abs anthro balls barely_contained barely_contained_balls barely_contained_penis big_balls big_muscles big_penis bone bulge canid canine canis clothing collar comic dialogue domestic_dog duo english_text flexing furious_(artist)genitals german_shepherd greyscale groover half-erect herding_dog hi_res huge_muscles hyper hyper_muscles male male/male mammal meatier_shower monochrome multiple_scenes muscular muscular_male nipples pastoral_dog penis penis_base tanz text underwear vein