Riley is a 9 year old large breed dog with an unusual type of tumour. Riley has an insulinoma. This is a tumour in the pancreas which produces insulin. Insulin is a hormone which allows extra sugar to be removed from the blood stream and stored as starch and fat, keeping the blood sugar level stable. The insulinoma produces excess insulin resulting in dramatic drops in the blood sugar. In Riley’s case this caused him to have a number of symptoms including disorientation, trembling, listlessness and even seizures. Insulinomas are a type of cancer and the goal is to maintain Riley’s quality of life for as long as possible. Currently, Riley is on medication to help increase his blood sugar and is being fed frequent high calorie meals. So far he has responded well to treatment and his family is enjoying every day with this loyal friend.