FURVERT!

13uckaroo animal_humanoid anthro balls_outline bear belly big_belly biped body_size_growth brown_body brown_fur bulge clothing detailed_bulge erection erection_under_clothing feet fur genital_outline growth hi_res human humanoid humanoid_feet male male_anthro male_human male_humanoid mammal mammal_humanoid muscle_growth musclegut muscular muscular_male penis_outline plantigrade sequence size_transformation species_transformation three_frame_image three_frame_sequence transformation transformation_sequence underwear ursid_humanoid werecreature