Quick Answer: The earliest signs of diabetes in cats are increased thirst, increased urination, and a bigger appetite that doesn’t stop weight loss — the same classic triad seen in dogs, per PetMD. But cats and dogs diverge sharply from there: untreated diabetic cats can develop plantigrade stance (walking flat on the hocks instead of up on the toes) in roughly 11% of cases at diagnosis, a nerve-damage complication dogs don’t get, while dogs instead go blind from cataracts. The bigger difference is prognosis — reported remission rates for treated diabetic cats range from 11% to over 60%, meaning a meaningful share of cats can stop needing insulin entirely, something that essentially never happens in dogs.
Diabetes in cats and dogs starts out looking like the same disease — more water, more litter box trips, a hungrier pet that’s still losing weight. It’s easy to assume the rest of the story is the same too. It isn’t. Cats get a different neurological complication, and critically, cats have a real shot at getting off insulin for good if it’s caught and managed early, which changes how urgently a cat owner should treat that first vet visit.
Cat diabetes, by the numbers
- 0.5-1% of the general cat population has diabetes, according to veterinary epidemiology data — roughly 1 in 100 cats will develop it in their lifetime.
- 3-5x higher diabetes risk for obese cats compared to cats at a healthy weight; cats over roughly 9 pounds are considered at elevated risk.
- ~11% of diabetic cats show plantigrade stance (walking on the hocks) at the time of diagnosis, a sign of diabetic neuropathy from prolonged high blood sugar.
- 11% to 60%+ reported remission rates across studies of treated diabetic cats, with a more recent study putting it at 29% — versus dogs, which are considered lifelong insulin patients once diagnosed.
The same triad, a different back half
| Sign or outcome | Cats | Dogs |
|---|---|---|
| Early triad | Increased thirst, urination, appetite + weight loss | Same triad (per our dog diabetes symptoms guide) |
| Signature complication | Plantigrade stance (walking on hocks) in ~11% at diagnosis | Cataracts / vision loss in up to 80%, per Merck Veterinary Manual |
| Can it go into remission? | Yes — 11-60%+ of treated cats, depending on the study | No — lifelong insulin is the norm once diagnosed |
| Biggest modifiable risk factor | Obesity (3-5x higher risk) | Being unspayed/female (~2x higher risk) |
The overlap in early symptoms is exactly why a cat owner who’s read about dog diabetes might assume the rest applies too. It doesn’t. Two mechanisms diverge in cats and dogs once the disease has been active for a while, and both are worth knowing before a diagnosis, not after.
Plantigrade stance: the cat-specific warning sign
Prolonged high blood sugar damages the protective sheath around nerves, and in cats that damage tends to hit the hind legs first. The result is plantigrade stance: instead of walking up on the toes the way a healthy cat does, a cat with diabetic neuropathy gradually drops down and walks flat on its hocks, almost like walking on its heels. It shows up in roughly 11% of diabetic cats right at diagnosis, and while it looks alarming, it’s usually not painful, and it’s often at least partially reversible once blood glucose is brought under control — in one clinical trial, stance had improved within 45 days for about 15 of 35 affected cats. Dogs essentially don’t develop this complication; their equivalent long-term risk is the eyes, not the legs, with up to 80% of diabetic dogs eventually developing cataracts per the Merck Veterinary Manual.
A digital pet food scale supports the diet change that actually drives remission
- Vets tie remission odds to consistent low-carbohydrate, often wet-food, feeding — a food scale makes portions repeatable instead of eyeballed, which matters when insulin doses are calculated against a specific feeding amount.
- Useful for keeping an at-risk or newly diagnosed cat at (or working toward) a healthy weight, since obesity is the single biggest modifiable risk factor for feline diabetes.
- Doesn't replace a vet-prescribed diet plan or insulin schedule — pair it with your vet's specific feeding and dosing instructions.
A new diabetes diagnosis often means a fast switch to prescription wet food, glucose test strips, and insulin supplies on a recurring basis — try Amazon Prime free for 30 days so those refills show up in two days instead of a week while a feeding and dosing routine is still being dialed in.
Why some cats get off insulin, and dogs don’t
This is the most consequential difference between the two diseases. Reported remission rates for treated diabetic cats vary widely by study — anywhere from about 11% up to more than 60% — with a more recent study putting the remission rate among treated cats at 29%. The factors that push the odds higher are consistent across the research: starting insulin quickly after diagnosis rather than waiting, feeding a low-carbohydrate diet (commercial wet food specifically has been linked to both remission and staying in remission), keeping the cat at a healthy weight since obese cats respond less well to insulin, and using longer-acting insulin types. Cats diabetic for more than six months before treatment starts are less likely to reach remission, which is the practical argument for a same-week vet visit rather than watching and waiting once the classic triad shows up. Dogs don’t get this option — the Merck Veterinary Manual treats canine diabetes as a lifelong, twice-daily-insulin condition from diagnosis onward, with diet supporting management rather than replacing insulin the way it sometimes can in cats.
Who’s most at risk
Obesity dominates the risk picture: an obese cat is roughly 3 to 5 times more likely to develop diabetes than one at a healthy weight, and with well over a third of adult cats considered overweight or obese, that single factor explains a large share of feline diabetes cases. Beyond weight, risk rises with age (most diagnosed cats are over 6), male sex, being neutered, a sedentary lifestyle, and long-term steroid use for conditions like feline asthma. For owners already managing an overweight or senior cat, that overlaps directly with our dog obesity guide’s body-condition-score approach — the same rib-check method applies to cats, even though the linked guide is written for dogs.
Can a tracker or camera help?
Not directly. No GPS tracker or camera can read a cat’s blood glucose, and a diabetes diagnosis always comes down to bloodwork and a urinalysis, not a behavior pattern alone. What a camera can do is make a gradual change easier to notice: a cat drinking more from the water fountain than usual, or making more litter box trips, are exactly the kind of slow shifts that are easy to miss in person but obvious once you’re reviewing a day of footage. That’s a prompt to call the vet, not a diagnosis — the same caveat that applies to cat kidney disease, another condition on this site where thirst and urination are the first visible clue to a problem that’s actually being confirmed by bloodwork.
The bottom line
Diabetes in cats starts out looking exactly like diabetes in dogs — more water, more litter box trips, a hungrier cat that’s still losing weight — but the back half of the disease is genuinely different. Cats risk a hind-leg complication (plantigrade stance) instead of the cataracts dogs get, and critically, a meaningful share of treated cats can go into remission and stop needing insulin altogether, especially if treatment starts quickly and a low-carb diet and healthy weight are part of the plan from day one. Dogs don’t get that option once diagnosed. The practical takeaway is the same one that applies across most conditions on this site: the early triad is easy to dismiss individually, but it’s worth a same-week vet visit, and for cats specifically, that early visit is what actually improves the odds of getting off insulin for good.