Rule 34 Dev - abs anthro biceps big_muscles biped brown_body brown_eyes brown_fur brown_hair bulge clothed clothing crouching exercise flexing fur hair hooves kneeling looking_at_viewer male muscular muscular_anthro muscular_male nipples pecs pose solo speedo swimwear topless underwear vein white_body white_fur workout loculi chester_(loculi) equid equine horse mammal 2013 hi_res|1881644065