tags: sirius dog, siriusfluffmonster, furry, furry art, kemono, bara, muscle, muscles, muscular, beefy, beef, buff, massive, pecs, abs, biceps, triceps, quads, thighs, calves, rump, butt, glutes, flex, flexing, fat, fatfur, fat fur, heavy, hefty
original: https://cashewlou.tumblr.com/post/148754791400