5:4acidanthrobellyblack_and_whitebodily_fluidscanidcanineduoeatingesophageal_sphincterinside_stomachinternaljahgolarger_malemalemale/malemale_predmale_preymammalmicromonochromeoral_voreorgansoverweightrainingsize_differencesmaller_malesoft_vorestomachstomach_acidtonguevore