Why do they need a donation to help? Seems he would be cheaper to feed than other dogs, since you'd feed him less.
We had a golden retriever who was quite obese. We didn't overfeed her; she was the master of stealing food. We'd be bringing in bags of groceries from the car, and "did you leave the bag of bread in the car?" "I thought I brought bread in, I don't remember though." <check car.> "Darn it, we must have left the bread at the grocery store." Meanwhile, the dog stole not one, but two loaves of bread and consumed them completely before we figured out what was going on. ANY food that was unattended for 10 seconds - consider it gone.