Dogs usually use high-pitched single barks when they are separated from their owners and a lower, harsher superbark when strangers approach or the doorbell rings.
Dogs usually use high-pitched single barks when they are separated from their owners and a lower, harsher superbark when strangers approach or the doorbell rings.
狗叫声高而短促时，通常是因为它和主人分开了；当它的叫声低沉而长时，可能是因为有陌生人靠近，或者是因为它听到门铃响了。