Galu wamapiri a Pyrenean adzakhala chiweto chabwino kwambiri kwa banja lokhala ndi moyo womasuka. Uyu ndi galu wodekha, wokhulupirika komanso wamakhalidwe abwino, koma mwiniwakeyo ayenera kukhala woleza mtima panthawi yophunzitsidwa chifukwa galu akhoza kukhala wodziimira komanso wouma khosi.
The Pyrenean Mountain Dog ndi galu wamkulu kwambiri, wolimbitsa thupi ndi malaya awiri. Chovalacho ndi chachitali, chowoneka bwino, chowongoka kapena chopindika pang'ono; chovala chamkati chimakhala chofewa, chofewa, komanso chowundana. Mtundu wa malaya ndi woyera, woyera ndi mawanga otumbululuka achikasu, bulauni, kapena imvi. Mphuno ndi yakuda; ndi maso akuda. Makutuwo ndi a katatu ndipo amalendewera pansi. Mchirawo ndi wautali komanso wa nthenga zazitali, ndipo umafika mpaka m’mawondo.