FURVERT!

abs anthro avian big_breasts big_butt big_muscles bird black_bars blue_body blue_feathers bottomwear breast_expansion breasts butt canid canine ceroba_ketsukane clothing duo expansion feathers female flexing fox fur growth hi_res huge_breasts huge_muscles huge_thighs hyper hyper_breasts hyper_muscles lerntern letterbox mammal martlet_(undertale_yellow)muscle_growth muscular muscular_anthro muscular_arms muscular_female muscular_thighs nipples orange_body orange_fur pants thick_thighs torn_bottomwear torn_clothing torn_pants undertale_(series)undertale_yellow vein veiny_muscles