Somogyi Rebounding is a common occurence in diabetic dogs who experience a sudden drop in low blood sugar. As a natural reaction, a dog's body will automatically dump glucose into the blood stream by breaking down glycogen that is stored in the liver. 

 

Symptoms

 

A typical Somogyi Rebound glucose pattern, especially with long-acting insulins, is a steady high blood glucose level that is not impacted by insulin doses. Often this can occur over a couple of days. Another symptom is that this usually flat number will experience sudden and dramatic decreases, followed by a quick return to high numbers. 

 

If you are using a fast-acting insulin, Somogyi Rebound can be identified by quick and wild swings between high and low blood sugar. 

 

Diagnosing Somogyi Rebound 

 

The only way to tell if your dog is experiencing a Somogyi Rebound is to chart your dog's glucose level consistently for an entire day. By test and charting every 2 hours, you will be able to get a sense of how their body is breaking down sugar in their body. A normal diabetic dog glucose chart will look like gentle rolling hills. Here is an example: