How can you tell if a dog is stressed out?

How can you tell if a dog is stressed out?
Signs Your Dog is Stressed and How to Relieve It

Stress is a commonly used word that describes feelings of strain or pressure. The causes of stress are exceedingly varied.
Pacing or shaking.
Whining or barking.
Yawning, drooling, and licking.
Changes in eyes and ears.
Changes in body posture.
Shedding.
Panting.

Signs Your Dog is Stressed and How to Relieve It
  1. Stress is a commonly used word that describes feelings of strain or pressure. The causes of stress are exceedingly varied.
  2. Pacing or shaking.
  3. Whining or barking.
  4. Yawning, drooling, and licking.
  5. Changes in eyes and ears.
  6. Changes in body posture.
  7. Shedding.
  8. Panting.
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