Bladder Stones in Dogs: Types, Signs and Treatment

By Tailwisp Editorial TeamUpdated October 17, 20263 min read

Stones in the bladder can be painful, and in male dogs they can block the urethra, turning a nuisance into an emergency.

What they are

When minerals in urine become concentrated, they can form crystals and then stones, called uroliths. Different minerals create different types, and each has its own causes and treatments.

Common types

• Struvite: often linked to bacterial infection, more common in females
• Calcium oxalate: more common in males and certain breeds such as miniature schnauzers, bichons and shih tzus
• Urate: often seen in Dalmatians and dogs with liver shunts
• Cystine and silica: less common

Your vet identifies the type by testing the stone or urine.

Signs

• Blood in the urine. See blood in dog urine
• Frequent urination, straining or crying
• Accidents in a house-trained dog
• Licking the genitals
• Abdominal discomfort
• Inability to urinate, an emergency

See urinary tract infections in dogs since infection and stones often go together.

Emergency: urinary blockage

A male dog who strains but passes little or no urine may have a stone lodged in the urethra. He may cry, vomit and become weak. Go to an emergency vet immediately.

Diagnosis

Vets use urinalysis, urine culture, X-rays, ultrasound and sometimes contrast studies. Some stones do not show on plain X-rays, so ultrasound is helpful.

Treatment

Choices depend on type, size and the dog:

• Dissolution diets for suitable struvite stones, with careful monitoring
• Antibiotics for infection
• Surgery to remove stones, especially if they are large or causing obstruction
• Minimally invasive options, such as laser lithotripsy, at specialist centers
• Pain control

See how much water should a dog drink.

Preventing recurrence

• Increase water intake, often with wet food
• Follow the diet prescribed for the stone type
• Treat infections promptly
• Offer frequent toilet breaks
• Keep regular rechecks with urine tests and imaging

Avoid supplements or home remedies unless your vet agrees, since the wrong change can promote another stone type.

Living with a stone-former

Some dogs need lifelong diets and periodic monitoring. Keep records of urine tests and imaging so changes can be spotted early.

Common mistakes

• Assuming it is a simple infection
• Changing diets without advice
• Skipping rechecks
• Ignoring straining in male dogs

Troubleshooting

• My dog strains but seems fine otherwise: call your vet the same day.
• Stones came back: ask about analysis of the stone and a revised plan.
• My dog refuses the prescription diet: ask about alternative formulations.

A simple plan

1. Learn the signs.
2. Get a diagnosis and stone type.
3. Follow treatment closely.
4. Monitor with rechecks.

Real-life examples

A schnauzer with calcium oxalate stones has surgery and a prevention plan. A female spaniel's struvite stones dissolve on a prescription diet. A male terrier with a blockage needs emergency care. Type and timing matter.

Working with your vet

Ask which type your dog has and why. That knowledge shapes everything that follows.

Collecting information for your vet

Note how often your dog urinates, the color of the urine, any straining and what he eats and drinks. If a stone is passed or removed, ask for it to be analyzed, since the mineral type decides diet and drug choices. Keep the lab report with your dog's records.

Water as a daily tool

Dilute urine makes it harder for crystals to form. Offer several bowls, a pet fountain if your dog likes it, and wet food or added water if your vet approves. Encourage regular toilet breaks, since urine sitting in the bladder for long periods concentrates minerals.

The takeaway

Bladder stones need a proper diagnosis. Watch for straining, treat promptly and follow prevention advice for the stone type.

This article is general educational information, not veterinary advice. Every dog is different. If your dog is unwell, or you are unsure about a symptom, diet change or medication, contact your veterinarian.