Possible Causes:
* Hyperthyroidism: An overactive thyroid gland can cause weight loss, increased thirst and urination, and bulging eyes (exophthalmos).
* Brain Tumor: Tumors in the brain can cause pressure that leads to bulging eyes and neurological changes, including weight loss.
* Eye Infection or Inflammation: Severe eye infections can cause swelling and bulging of the eye.
* Trauma: An injury to the head could cause eye bulging and other neurological symptoms.
* Nutritional Deficiency: Severe weight loss could be caused by a lack of essential nutrients.
* Other Medical Conditions: A variety of other conditions, such as kidney disease, diabetes, or heart problems, can lead to weight loss and other symptoms.
What to Do:
* Contact your veterinarian immediately. They can perform a physical exam, run tests (blood work, imaging), and determine the underlying cause of the symptoms.
* Avoid self-treating. Attempting to treat these symptoms at home without veterinary guidance can be dangerous and could worsen the situation.
* Keep your dog calm and comfortable. Limit their activity and provide a quiet environment until they can be seen by a veterinarian.
Remember, it's always best to err on the side of caution when it comes to your pet's health. Early diagnosis and treatment offer the best chance for a positive outcome.