You should not give your pet any pain relief medications without first consulting with your local veterinarian. Always follow the directions on the label and do not give doses higher than recommended.
Pain can be a temporary problem or a persistent one. Acute or sudden pain can be the result of animal surgery or accidental damage to any of the major organs, muscles or bones of your dog. However, Pain can be a temporal problem or a persistent one. Some causes of chronic pain in older pets are hip dysplasia, arthritis of the spine and joint instability.
If you think your Dog is in pain, then call your local Vet and he/she will know what is best for your Dog.