You’ve heard of dogs who can track down suspects or find drugs with their noses.

Dogs can be trained to provide all sorts of assistance to human beings. This one sniffs out diabetes in its owner.

Like most 8-year-olds, Nolan Peters loves playing ball with his dog.

But, his black lab is more than just a playmate. Nova is specially trained to detect changes in Nolan’s blood sugar.

If Nolan smells different, Nova alerts Nolan’s mother.

“Especially if his sugar is really out of wack, if its really high she goes crazy, she was nibbling at his toes one day,” says Chris Peters, Nolan’s mother.

Every time Nova’s right about a change in Nolan’s blood sugar she gets a reward.

Peters adds, “that’s the only time she gets a treat. Now she knows that when he smells differently than he’s supposed to, she barks or comes to the side of my bed and sort of walks around until I wake up.”

Before Nova, Chris Peters had to wake her son up in the middle of the night, every night to test his blood sugar.

This black lab restored her sleep and her sanity.

“She is able to put our minds at ease. We’re able to rest soundly at night,” says Peters.

And, Nolan is able to live life more like a healthy 8-year-old.

Dogs like Nova cost between $10,000-$20,000. But, the Juvenile Diabetes Association is auctioning one off at a fundraiser in May.