A dog who hides during thunderstorms, panics when left alone or trembles on car rides may be afraid, not stubborn. Anxiety can look like barking, pacing, panting, trembling, elimination indoors or destructive behavior. The most useful response depends on the trigger, its severity and whether pain or illness is contributing.
When to contact a veterinarian
Arrange an examination if anxiety is new, worsening, causing self-injury or interfering with eating and sleep. Sudden behavioral changes can follow pain, sensory changes or other medical problems. A dog who is panicking or showing aggression also needs a safe management plan to protect people and animals while professional help is arranged.
First identify the pattern
Does the behavior happen with fireworks, strangers, handling, car trips or only when the home is empty? Keep a brief diary of the trigger, duration, body language and recovery time. A video recorded safely may help a veterinarian or qualified behavior professional. Avoid punishment or forcing a frightened dog to face the trigger; this can make fear worse.
Build predictable, low-stress routines
Provide a quiet resting space that the dog can enter voluntarily, age-appropriate exercise, enrichment and regular mealtimes. Reward relaxed behavior and work gradually with the trigger at a level the dog can tolerate. For separation-related distress, a structured desensitization plan may be needed; simply leaving a panicking dog for progressively longer periods is not the right starting point. Some dogs benefit from a veterinary behaviorist or a qualified positive-reinforcement trainer.
When medication may be considered
Veterinarians sometimes prescribe medication for significant anxiety, either for specific events or as part of a longer-term plan. Medication selection depends on health, current drugs, triggers and behavior history. It should support, not replace, behavioral management. VCA’s trazodone overview describes one prescription option used under veterinary direction; it is not a do-it-yourself dose guide. Do not use human sedatives, CBD or leftover medications without discussing safety with a veterinarian.
Follow-up and realistic progress
Track how often episodes occur, their intensity and how quickly the dog settles. Treatment may need adjustment when triggers change or side effects occur. VCA’s guidance on pre-visit medication explains why medication can be combined with gentle handling and training for anxious veterinary patients. If heavy panting occurs unexpectedly at rest or with weakness, consult our excessive panting guide and seek medical evaluation rather than assuming anxiety.
General behavioral education, not an individualized medication plan.
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.