In general, the breed has proved itself to be a loving, devoted family dog but often suspicious of strangers. They are also a very independent and reserved breed. Nevertheless, the Shar Pei is extremely devoted, loyal and affectionate to its family and is amenable to accepting strangers given time and proper introduction at a young age. If poorly socialized or trained, it can become especially territorial and aggressive. Even friendly and well-socialized individuals will retain the breed’s watch dog proclivities (such as barking at strangers). It is a largely silent breed, barking only when playing or when worried.