FURVERT!

absurd_res annoyed anthro anus anus_size_difference ball_size_difference balls balls_touching big_balls big_butt big_muscles big_pecs big_penis butt crouching duo echidna eulipotyphlan forest genitals half-closed_eyes hedgehog hellpasser hi_res huge_balls huge_pecs huge_penis hyper hyper_balls hyper_genitalia hyper_penis knuckles_the_echidna looking_back male mammal monotreme muscular muscular_male narrowed_eyes pecs penis penis_size_difference plant puffy_anus remake sega smug_grin sonic_the_hedgehog sonic_the_hedgehog_(series)tail thick_thighs tiptoes tree