Hypoglycemia is the technical term for low blood sugar.  Tissue, such as muscle, receives glucose from the blood to use as energy.  Animals that become hypoglycemic have used up all the glucose in their blood and become weak, comatose, and may even die.  Hypoglycemia is not a disease, but simply the body’s response to a lack of glucose. It is a very real condition in TOY breeds in general. We will go over how to prevent this condition. I also have a good article on my website. And you should Google the term hypoglycemia to familiarize yourself with this condition.