Most people are aware of guide dogs, mobility service dogs, and possibly hearing dogs. But dogs help people with medical issues in myriad ways beyond these service dog roles. In her latest book, author Maria Goodavage explores dozens of the tasks dogs perform to diagnose, treat, heal, and comfort humans. And the epilogue and acknowledgements sections briefly describe dozens more that were omitted from the main sections of the book (the end sections might have been my favorite part …).

Dogs who detect COVID are in the news; but fewer people are aware of dogs’ ability to detect several types of cancer, as well as diabetics’ sugar highs and lows. Goodavage even has wonderful stories of dogs who detect their human partners’ impending seizures or cardiac incidents …

Moving beyond physical ailments, Goodavage devotes several sections to dogs who assist in times of crisis and trauma, whether serving an individual with PTSD or showing up at court to comfort children testifying in abuse cases, the dogs are on the job.

The book is a comprehensive catalog of ways that dogs help people, but it’s more than that. The thread connecting all of the stories is the human-canine relationship. For many of the “services” dogs perform, neither their partners nor the dogs’ trainers can identify what the dog is detecting. The dogs are deeply connected to their humans and figured out a pattern, decided that the human needed some help, and came up with a way to let them know.

For example, Goodavage is careful to explain that it’s not really possible to train a dog to detect an impending seizure. Many organizations do train dogs to respond in specific ways if their partner has a seizure, though. Some of these trained dogs figure out a pattern of behavior, chemical changes, or something else that reliable predicts a seizure and begin to warn their person. Or a parent, in the case of a child. There are even stories of untrained dogs figuring this all out on their own.

In the case of dogs who are trained to detect the scent of hypoglycemia, for example, or bladder cancer, Goodavage muses about “rogue” doctor dogs — dogs alerting random strangers while out and about. It’s not impossible; some trained dogs have raised the alarm without prompting.

The book is a great read. Goodavage is a stellar storyteller, and she’s done deep research. In addition to interviewing dozens (hundreds?) of trainers, handlers, and people partnered with doctor dogs of all specialties, Goodavage leads readers through all the current research (with a 20-page reference list  to back her up) on how dogs do this and how effective they are. Despite the deep dive into science and research, the book is engaging and readable.