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anthro big_muscles black_body black_fur canid canine colleen_(road_rovers)female fur growth huge_muscles mammal muscle_growth muscular muscular_anthro muscular_arms muscular_female muscular_legs muscular_thighs mythological_canine mythological_creature mythology red_eyes road_rovers sharp_teeth solo teeth transformation werecanid werecanine werecreature werewolf zer0myostatin