Work of Dogs
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Service Dogs for Diabetics


D4D dogs are trained to alert their handler when they detect a scent on the breath or in the sweat of someone whose blood glucose is dropping rapidly. The dogs can detect the scent from anyone nearby who might be “going low,” although they are trained to only alert their handler. The dogs graduate from the program when they can detect the scent with a 95 percent accuracy rate from across a room. Each dog alerts his handler with unique body language. After picking up the scent by snuffling loudly and inhaling as many telltale molecules as possible, Destiny alerts Harris by placing her paws on Harris’s lap or chest.


On Tuesday nights at D4D, dogs and their potential handlers test the waters with one another. People are focused and hopeful as they learn how to handle a dog and what to expect in public when accompanied by a service dog. Meanwhile, staff members are on the lookout for a special connection. “Many people are eager to be partnered with one of our dogs,” says director Carol Edwards. “But we don’t make placements according to a waiting list; instead, we pair up dogs and people when we see a special chemistry at work.” Once a match has been made, the dog and his handler work as a leashed-together pair 24 hours a day for up to two months. During this “umbilical period,” the dog learns to connect his person’s hypoglycemic scent with a reward. Reynolds explains, “It’s almost as if they are saying, I smell the scent. I’m going to let you know that I smell the scent, and then I’ll get treats!


At first, Harris didn’t believe that a dog could detect low blood sugar, but her skepticism vanished when she worked at a camp for diabetic children and accompanied a D4D dog on his midnight rounds. She became a believer when she watched the dog alert his handler to a sleeping child whose blood sugar reading was in the low 30s.


Just three weeks before the momentous night—the night when she didn’t wake up freezing in sweat-soaked linens—Harris brought Destiny home. Instead of ravenously raiding the refrigerator and experiencing the disorientation and emotional rollercoaster that accompanies midnight hypoglycemia, she simply lay in bed and drank a glass of juice. “It’s the best low I’ve ever had,” she confesses with a smile.


These days, Destiny accompanies Harris everywhere, wearing the blue vest that identifies her as a medical-alert service dog. Destiny’s presence in the car eliminates Harris’s concern about going low while driving, and in the classroom, Destiny sits by Harris’s side and gives her enough warning that she can grab a healthy snack without missing a moment of instruction. And at night, this faithful companion frees Harris to sleep soundly without the risks and fears of nighttime hypoglycemia.


The work at D4D holds promise for hundreds of thousands of Type 1 diabetics. For Mark and the other tireless volunteers at D4D, the bottom line is that these dogs relieve people of the fear of hypoglycemia, and they save lives. Most rewarding are the phone calls from parents who say, “The dog woke me up last night, and my child’s blood glucose was 40.”


Harris grew up with Lab mixes, and initially she looked forward to building a special relationship with her new dog; then she realized exactly how special that relationship would be: “When I first received Destiny, I was so excited to be able to care for a dog. This is really cool! I thought to myself. She depends on me for fun, for play, for food, for a good walk. But when she started to alert on me, it really struck home: I am the one who depends on her to literally save my life.” No glucose meter in the world can measure the depth of that bond.

Originally published as “An Immeasurable Bond.” 



This article first appeared in The Bark,
Issue 43: Jul/Aug 2007
Susan Lyte King is a California-based freelance writer.
CommentsPost a Comment
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Submitted by Carol | August 18 2012 |

Would like to know more details, cost etc. How would someone go about getting one?

Submitted by Daniela Lopez | August 20 2012 |

Please visit dogs4diabetics.com for more information.

Submitted by paula mount | January 3 2013 |

My daughter is 32and has type 1 diabetes. She has adopted17 kids and given birth to 1 child. She is having problems with lows. Her husband has had to call an EMS twice and there have been many other close calls. How does someone get a dog and what is the price?

Submitted by Susan Bowen | November 16 2013 |

I have had Type 1 diabetes for 42 years. How nice it would be to have an alert dog with me every where I go. Had a wreck in 1997 due to a low and have had to many lows while driving even though I test my blood glucose real often. I would like information on how to get an alert dog and the cost. Thank you.

Submitted by paula mount | January 3 2013 |

My daughter is 32and has type 1 diabetes. She has adopted17 kids and given birth to 1 child. She is having problems with lows. Her husband has had to call an EMS twice and there have been many other close calls. How does someone get a dog and what is the price?

Submitted by David Shoopman | September 23 2013 |

I want to buy a service dog for type 1 diabetes. I live in Greenwood, Indiana. How do I get a service dog like this. Thanks

Submitted by Shelley Lee Hudak | September 8 2014 |

I have been diabetic since I was 10 yrs old and my blood sugar was 1600, since than I have all the toes removed off of my right foot and have a drop foot too. My blood sugars run high most of the time and when the do run normal they feel low. I know most places use labs for this kind of work, but I was interested in a smaller puppy such as a sheltie, do you use them and if so what is your price for a service dog?

Submitted by Anonymous | August 24 2012 |

I am so thankful I found this article. I have been searching for an organization like yours. My boyfriend is 38 and has been insulin dependent diabetic since he was 6. He takes impeccable care of himself but has a very active job and as he has gotten older his blood sugar has gotten harder to stabilize despite checking it at least 7 times a day. We live in Louisiana. Is it possible to apply for a dog there and what is the final cost for one? By the way he would take such great care of one!!! Thanks so much. Sincerely

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