Hi, my husky was the same, a bit of a piggy, then I noticed her guard hairs coming out in handfuls, she started to go off her food, suddenly lost loads of weight and was drinking loads. She was then diagnosed with diabetes, pancreatitis and keystone acidosis. She is now on insulin twice a day and is much more settled, she is however blind because of it and I’m trying to raise money for an operation for her, this might not have happened if I’d picked up on it sooner, could you ask for a diabetes test? It’s fairly simple, either a urine test or blood test. Hope that helps in some way and diesel picks up soon xxx