Thunderstorm phobia is a common and distressing anxiety disorder in dogs that worsens over time without appropriate intervention.
Thunderstorm phobia causes acute and significant suffering during every storm event. Dogs with severe phobia may spend hours in extreme distress, panting, trembling, attempting to escape, injuring themselves on fences or windows, and occasionally causing self-harm. The anticipatory anxiety triggered by pre-storm barometric pressure changes means the welfare impact extends beyond the visible storm to the hours preceding it. Without treatment, most phobic dogs worsen progressively over years as each storm experience reinforces and deepens the fear response. The welfare case for early intervention is therefore strong: behavioral treatment and medication are most effective before the phobia becomes entrenched. Owners who delay treatment hoping the dog will grow out of the fear allow the progressive worsening that makes later treatment harder and the welfare impact across more storm seasons more severe.