The American Animal Hospital Association (AAHA) has released its first diabetes management guidelines written specifically for dogs, AVMA News reported on September 24, splitting canine care away from the feline protocol AAHA published earlier in 2026.
Canine diabetes and feline diabetes are mechanistically different diseases, which is why one shared protocol stopped making sense. Nearly every diabetic dog has absolute insulin deficiency: the pancreas's beta cells are permanently lost, and insulin therapy becomes a lifelong commitment rather than a phase managed toward remission. Cats more often have relative insulin resistance, which newer oral medications can sometimes reverse, a difference Hound covered when feline diabetes care shifted from the hospital to the home.
How AAHA's Guidelines Diagnose and Dose Insulin in Dogs
The guidelines set a clear diagnostic bar: glucosuria (glucose in the urine) plus concurrent hyperglycemia (high blood sugar) confirms a diabetes diagnosis in a dog, distinguishing it from the transient blood sugar spikes stress or illness can cause. Once diagnosed, every dog needs insulin. There's no watch-and-wait phase the way there sometimes is in cats.
For insulin dosing, AAHA recommends calculating a starting dose from a dog's estimated ideal body weight, not its current weight, then rounding down to the nearest whole unit. Starting low and titrating up avoids the more dangerous alternative: an overdose that triggers hypoglycemia (low blood sugar) in a newly diagnosed dog before its owner knows what to watch for.
The prognosis, once therapy is dialed in, is genuinely good. Dogs tolerate lifelong insulin injections well, and AAHA frames long-term management as a routine, sustainable part of ownership rather than a crisis to manage indefinitely.
What Peakless Insulins and Glucose Monitors Change for Dogs
Two tools get real attention in the new guidelines, and both are recent enough that the 2018 version couldn't have addressed them.
The first is continuous glucose monitoring. Blood glucose testing is still the only reliable way to catch hypoglycemia before it becomes dangerous, and the guidelines lean into monitors as a now-realistic part of routine dog care rather than a specialty tool reserved for the hardest cases.
Audrey K. Cook, a member of AAHA's guidelines task force, framed the shift directly:
The second is a newer generation of peakless insulins, among them insulin degludec and glargine U-300, both called out by name in the guidelines. Older insulins spike and fall predictably around feeding, so a missed meal can mean a dangerous blood sugar crash. Peakless formulations hold a flatter, more consistent glycemic profile across the day. They don't need to be timed tightly to meals, and they carry a lower hypoglycemia risk if a dog skips one. For dogs with inconsistent appetites, or comorbidities like hypercortisolism (Cushing's disease) that already complicate blood sugar control, that flexibility is a real upgrade.
For a practice still treating diabetic dogs and diabetic cats as the same disease, the new canine-specific guidelines are the corrective. The dosing math, the insulin choice, and the client conversation about hypoglycemia now diverge enough by species. Reaching for one playbook for both risks getting a dog's care wrong in ways the old shared guidance let slide.