Frequent Urination

Frequent urination in a dog or cat can mean two quite different things, and telling them apart matters a lot for figuring out what's going on. Vets sometimes talk about pollakiuria, which is straining or squatting often but only passing small dribbles each time, and polyuria, where your pet is actually producing a much larger total volume of urine than normal over the day. They can look similar from the outside, since both mean more trips outside or more litter box visits, but the underlying causes are usually different.

Small, frequent squirts of urine (pollakiuria) most often point to a problem lower down in the urinary tract itself, things like a bladder infection, bladder stones, or inflammation of the bladder wall. This pattern can also show up when a cat or dog is straining because they're actually struggling to pass urine at all, which is worth mentioning because in male cats especially, a blocked urethra is a genuine emergency that needs same-day veterinary attention.

Larger volumes of urine passed more often (polyuria) tend to signal something happening elsewhere in the body that's affecting how the kidneys handle water. According to veterinary reference sources, the most common causes in dogs are chronic kidney disease, Cushing's disease, and diabetes mellitus, while in cats the usual suspects include chronic kidney disease, diabetes, and an overactive thyroid gland. This kind of urination almost always comes paired with increased thirst, since a pet who's losing more water in urine drinks more to keep up. Other possible contributors include certain medications like steroids or diuretics, a high-salt diet, or in unspayed female dogs, a serious womb infection called pyometra.

A few signs mean you shouldn't wait for a routine appointment and should get checked out sooner rather than later:

• Straining with little or no urine coming out, especially in male cats or dogs
• Blood in the urine
• Accidents in the house from a previously reliable pet
• Increased thirst alongside the increased urination
• Lethargy, vomiting, or a drop in appetite
• Sudden weight loss despite normal or increased eating

Because so many possible conditions share this one symptom, working out the actual cause almost always needs a vet visit rather than guesswork at home. A typical workup starts with a urine sample and blood tests, and may extend to imaging like an ultrasound if stones or a mass are suspected. The encouraging part is that most causes of frequent urination, from infections to diabetes to early kidney disease, respond well to treatment when they're caught and managed properly, so this is very much a symptom worth acting on rather than watching and waiting.