No single Cushing's symptom is alarming on its own, more thirst, a bigger belly, thinning fur all look like ordinary aging. It's the way they cluster together that gives it away, once you know to look.
The main symptoms of Cushing's disease in dogs are increased thirst and urination, increased appetite, a pot-bellied appearance, thinning coat or hair loss, panting, and recurrent skin or urinary infections. Individually these mimic aging, so the pattern matters more than any one sign. Cushing's is diagnosed with specific vet tests, never symptoms alone, and it is managed long-term under veterinary care.
About Zycortal (DOCP): this is a prescription medication your veterinarian can prescribe. Read our guide, or ask us if you need help sourcing it.
The classic symptom cluster
Watch for these appearing together: drinking noticeably more and urinating more (often the first thing owners notice), a ravenous appetite, a rounded pot-bellied look, thinning fur or symmetrical hair loss, excessive panting, muscle weakness, and skin that bruises or heals slowly. One or two can be anything; several together point toward Cushing's. [1]
Why it's mistaken for aging
Every one of these signs, more drinking, a bigger belly, a duller coat, less energy, reads as an old dog simply getting older. That's exactly why Cushing's is so often caught late. If your senior dog is developing several of these at once, it's worth asking your vet specifically about Cushing's rather than accepting normal aging. [2]
Symptoms are a clue, not a diagnosis
Here is the part: these symptoms suggest Cushing's but cannot confirm it, and other conditions (diabetes, kidney disease) share some of them. Diagnosis needs specific blood and urine tests your vet runs, sometimes more than one, because false results happen. Treating for Cushing's without confirming it causes harm.
What happens next
If tests confirm it, Cushing's is managed with medication and regular monitoring, directed by your vet, not cured overnight. Many dogs do well once it's controlled. The related endocrine emergency, Addison's, is its opposite. Treatment and dosing are veterinary decisions; we never set doses.
Frequently asked questions about cushing’s disease in dogs symptoms
What is usually the first sign of Cushing's in dogs?
Often increased drinking and urination, followed by a bigger appetite and a pot-bellied look. The signs build gradually.
Can Cushing's be diagnosed by symptoms alone?
No, symptoms suggest it, but specific vet tests are needed to confirm, since other diseases overlap.
Is Cushing's disease in dogs serious?
It's a manageable chronic condition when diagnosed and treated, but it needs proper veterinary care.
Related endocrine conditions
Cushing’s disease in dogs · Cushing’s life expectancy · Addison’s disease · Hypothyroidism · Diabetes symptoms · Thyroid problems
Sources & References
For educational use. PrepperPetSupply is a licensed, veterinarian-staffed pharmacy; prescriptions are dispensed only after review by a licensed veterinarian and are not a substitute for in-person veterinary care. Not for human use.