According to traditional Chinese medicine, blood sugar issues are classified as upper, middle and lower wasting syndrome called
xiao ke.
Upper body wasting and thirsting is characterized by Lung heat drying up the moisture, leading to big thirst.
Middle wasting is characterized as Stomach heat damaging fluid, leading to rapid hungering.
Lower wasting from diabetes is characterized by Kidney deficiency leading to profuse urination.
Dogs who present with diabetes will also show signs of damp accumulation and Spleen deficiency (digestive weakness).
Overall the dog or cat with blood sugar disharmonies is is considered to be Yin deficient accompanied by Damp and Heat.