Excessive Thirst

• Excessive thirst is often the first sign of pet diabetes.
  
  

Frequent Urination

• If your pet urinates frequently or more often than usual, it could be a sign of pet diabetes.
  
  

Lethargy

• Your pet may have less energy, that is, become lethargic and weak if he has pet diabetes.
  
  

Vomiting

• Your pet may begin to vomit or vomit more frequently if he is experiencing pet diabetes.
  
  

Weight Loss

• Weight loss can be a symptom of pet diabetes due to nutritional intake being compromised by the diabetes and vomiting.
  
  

Sudden Blindness

• If your pet experiences an onset of poor vision or blindness, it could be related to diabetes. This is not the same as sight loss due to cataracts but total blindness. Cataracts can be another symptom of diabetes, causing a clouding of the eyes.