Aiden Heath, an 8-year-old boy with Type I diabetes, has been waiting for this day since he was 4 years old.

It was then that his mother, Jenni Heath, told him that he would have to take an active role if he wanted to get a service dog to help with his diabetes. These service dogs, known as diabetes alert dogs, cost about $15,000. Aiden’s mother told him that he could start saving his pennies, and that’s just what he did.

Four years later, he’d saved almost $2,500 in change — enough for a deposit on the dog.