It is very dangerous for a dog's blood sugar to be over 20, which means that the diet needs to be adjusted. Diet is the key factor that affects the dog's blood sugar level. If your dog consumes too much high-sugar and high-fat food, it will cause blood sugar to rise. Therefore, owners should pay attention to their dogs' diets to ensure they are getting a balanced, nutritious diet and avoid overfeeding.

In addition, lack of exercise may also cause the dog's blood sugar to rise. Appropriate exercise can help dogs consume excess energy and maintain healthy weight and blood sugar levels. Owners should encourage dogs to engage in moderate exercise.