Just like people, dogs communicate using body language. Your dog is communicating
with his entire body, not just his tail or his voice. If you want to know how he is feeling, you’ll need to learn to read your particular dog’s body language. To get a sense of what your dog is trying to tell you, spend as much time as you can observing your dog and his body posture.
What causes stress for your pet? A guide of natural products for stressed-out pets.