Pagulu la gulu lalikulu kwambiri la ambulera "Fédération Cynologique Internationale" (FCI), Shih Tzu ali m'gulu la 9 "agalu amnzawo ndi agalu" ndipo ndi gawo 5 "mitundu ya agalu aku Tibetan".
Shih Tzu ndi galu wamng'ono yemwe, malinga ndi muyezo wa FCI, amatha kukula mpaka 27 cm ndikulemera mpaka 8 kg. Imaoneka yofewa chifukwa cha ubweya wake wautali, wandiweyani wokhala ndi malaya amkati ambiri. Zimabwera m'mitundu yambiri (komanso piebald) ndipo makutu aatali a floppy nthawi zambiri amakhala ovuta kuzindikira chifukwa cha ubweya wambiri.
Pansipa mupeza ma tattoo 10 abwino kwambiri agalu a Shih Tzu: