Dogs left alone all day with little stimulation bark from boredom and frustration.
Boredom
Dogs are prone to bark when hearing or seeing passersby to protect their turf.
Territory
Barking can indicate physical discomfort or needs like hunger or needing to potty.
Discomfort
Stress, fear, or separation anxiety can prompt anxious, repetitive barking.
Anxiety
Some dogs learn to bark continuously to get attention from their people.
Attention-Seeking
Guarding breeds will vocally warn of possible threats to family members.
Sensing Danger
Neurological issues in aging dogs can trigger uncontrollable barking.
Illness