Initially, he started drinking a lot of water. Then he would puke it back up. Then he got lethargic. His breed is prone to it. Especially when people give them people food. Trip to vet diagnosis was pancreatitus. Blood work, overnight stay for 2 nights.. observations. Vet said if it continued it would progress and we could lose him. Then happened 2nd time and it had progressed to Diabetes. Have had him on special food and insulin ever since.