“He’s just getting old.” It is the most natural explanation in the world when an older dog slows down, drinks more, or loses a little coat — and often it is exactly right. But some of the changes we shrug off as aging are actually early signs of Cushing’s disease, one of the most common hormonal conditions in senior dogs. Knowing which is which can mean catching a treatable problem years earlier. Here is how to tell them apart.
The Signs Owners Most Often Blame on Aging
Cushing’s tends to arrive quietly, through changes that look a lot like ordinary getting-older: drinking and urinating more, a bigger appetite, more panting, a pot-bellied or sagging middle, thinning hair or a coat that does not grow back, and less energy. Individually, any of these can be benign. The pattern is what matters — and the thirst is often the tell.
Normal Aging vs. Cushing’s: What to Look For
Normal aging is gradual and generally does not dramatically change how much your dog drinks or pees. A healthy senior might be stiffer, sleep more, or gray around the muzzle, but they are not suddenly emptying the water bowl and asking to go out overnight. Cushing’s, by contrast, often brings a noticeable jump in thirst and urination, a genuinely increased appetite, and skin or coat changes that go beyond a bit of graying. If you find yourself refilling the water bowl far more than you used to, that is not a classic sign of age — it is a reason to look closer.
A simple at-home clue: if your once reliably house-trained dog starts having accidents, or you are refilling water noticeably more often, note when it started. Those specifics help your vet enormously.
When to Ask Your Vet About Testing
You do not need to diagnose anything yourself — you just need to notice and report. Consider asking your veterinarian about Cushing’s testing if your dog shows a few of these signs together, especially increased thirst and urination that has clearly changed from their normal. Cushing’s usually affects middle-aged and older dogs, so in a senior dog these changes deserve a real look rather than a shrug.
Bear in mind that other conditions — diabetes, thyroid disease, kidney disease — can cause similar signs, which is exactly why testing matters. Your vet will sort out which one it is.
Why Catching It Early Matters
Cushing’s is not curable, but it is very manageable, and dogs whose Cushing’s is controlled often live comfortable, happy lives. The earlier it is identified, the sooner you can start a plan — whether that is medication, natural support such as lignans and melatonin, dietary adjustments, or a combination — and the more of your dog’s quality of life you protect. “Just old age” is sometimes true, but it is worth making sure.
The Bottom Line
Some signs we write off as aging — especially a real increase in thirst, urination, appetite, and panting, plus coat changes — can be early Cushing’s. You do not have to be certain; you just have to notice the pattern and mention it to your veterinarian. Catching Cushing’s early is one of the kindest things you can do for a senior dog.
Sources
- University of Illinois College of Veterinary Medicine — When Aging Isn’t the Answer: Cushing’s Disease in Dogs. vetmed.illinois.edu
- American Kennel Club — Cushing’s Disease in Dogs: Causes, Symptoms, and Treatment. akc.org
- Merck Veterinary Manual — Cushing Disease (Pituitary-Dependent Hyperadrenocorticism) in Animals. merckvetmanual.com