Here's what rhymes with hystricognathous.
vows hows thous cows arouse bows boughs avows dhows scows cowers mows wows chows loughs taus allows brows browse espouse ploughs plows carouse prows drowse prognathous haymows endows disavows menopause hedgerows cornrows snowploughs windrows Words that almost rhyme with hystricognathous
house south mouth mouse spouse rouse louse douse louche dowse pouffe blouse grouse drouth firehouse coffeehouse powerhouse boathouse summerhouse meetinghouse slaughterhouse cottonmouth porterhouse boardinghouse clearinghouse packinghouse fowls howls fouls sourdoughs sounds towns mouths nouns downs gowns hounds founds frowns shrouds jowls scowls bauds cowls dowers yowls zounds pounds clouds bounds crowds crowns mounds rounds surrounds clowns lbs browns drowns growls astounds prowls befouls grounds abounds southwards confounds resounds nightgowns enshrouds newshounds overclouds waterfowls overcrowds dumfounds expounds redounds beclouds eiderdowns impounds inbounds wolfhounds ballgowns rubdowns wraparounds wildfowls foregrounds propounds shantytowns thunderclouds turnarounds ultrasounds runarounds battlegrounds