FURVERT!

anthro belly belly_expansion biceps big_belly big_bulge big_muscles brown_body brown_fur bulge canid canine canis clothing collar domestic_dog duo expansion fur great_dane greggrth growth hand_on_belly hanna-barbera hi_res huge_muscles human male mammal mastiff molosser muscle_growth musclegut muscular muscular_male nipples pecs scooby-doo scooby-doo_(series)shaggy_rogers simple_background size_difference tail tan_background thong triceps underwear weight_gain