Bladder Stones in Corgis
Pembroke Welsh Corgis have a moderate predisposition to urinary bladder stones (uroliths). Understanding the types and prevention strategies is important for long-term health.
Breed Predisposition
- Moderate risk compared to high-risk breeds (Dalmatians, Schnauzers)
- Both males and females affected
- Males at higher risk for urethral obstruction (emergency)
- Most common types: struvite and calcium oxalate
- Can occur at any age but more common in middle-aged to senior dogs
Key Statistics & Research Data
Struvite (magnesium ammonium phosphate) and calcium oxalate are the two most common urinary stone types in dogs, together accounting for approximately 80% of all canine uroliths — dietary management can dissolve struvite stones but not calcium oxalate (Source: Houston et al., Canadian Veterinary Journal, 2004; Lulich et al., JVIM, 2016).
Pembroke Welsh Corgis have been identified among breeds with moderate predisposition to urinary stones, with adequate water intake (maintaining urine specific gravity <1.025) being the most important preventive measure (Source: Lulich et al., JVIM, 2016; Minnesota Urolith Center Database).
Recurrence rates for calcium oxalate stones are approximately 25-50% within 1-3 years without preventive dietary management, making long-term monitoring with urinalysis every 3-6 months essential for affected dogs (Source: Lulich et al., JVIM, 2016).
Types of Bladder Stones
| Type | Cause | Dissolvable? | Prevention Diet | |------|-------|-------------|----------------| | Struvite | Usually infection-related | Yes (with antibiotics + diet) | Acidifying, low magnesium | | Calcium oxalate | Metabolic, genetic | No (surgery needed) | Moderate calcium, hydration | | Urate | Liver issues, genetic | Sometimes | Low purine diet | | Cystine | Genetic amino acid defect | Sometimes | Low protein, alkalinizing |
Symptoms
Early Signs
- Frequent urination (small amounts)
- Straining to urinate
- Blood in urine (pink or red)
- Urinating in unusual places
- Licking genital area excessively
- Cloudy or strong-smelling urine
Emergency Signs (Obstruction)
- Cannot urinate at all (straining with no output)
- Painful abdomen
- Vomiting
- Lethargy
- This is a life-threatening emergency — seek vet immediately
- More common in males (narrow urethra)
Diagnosis
Methods
| Test | Purpose | Accuracy | |------|---------|----------| | Urinalysis | Crystals, pH, infection | Screening | | Urine culture | Identify bacteria | Essential for struvite | | X-ray | Visualize radiopaque stones | Good for most types | | Ultrasound | All stone types, soft tissue | Excellent | | Stone analysis | Determine exact composition | Required for treatment plan |Treatment
Struvite Stones
Calcium Oxalate Stones
Surgical Options
| Procedure | Indication | Recovery | |-----------|-----------|----------| | Cystotomy | Large stones, obstruction | 10-14 days | | Laser lithotripsy | Smaller stones | 3-5 days | | Urohydropropulsion | Very small stones | Same day |Prevention
Dietary Strategies
- Prescription urinary diets (Hill's c/d, Royal Canin SO)
- Increased water intake (most important)
- Wet food or adding water to kibble
- Appropriate protein levels
- Controlled mineral content
Hydration Strategies
- Multiple water bowls throughout house
- Water fountains (moving water encourages drinking)
- Add water to food (make "soup")
- Low-sodium broth as water flavoring
- Ice cubes as treats
- Monitor urine color (should be light yellow)
Monitoring
- Urinalysis every 3-6 months
- X-ray or ultrasound every 6-12 months
- Watch for recurrence signs
- Maintain prevention diet lifelong if prone
Key Takeaways
- Corgis have moderate predisposition to bladder stones
- Struvite stones can dissolve with antibiotics + diet; calcium oxalate requires surgery
- Male Corgis are at higher risk for life-threatening urethral obstruction
- Increased water intake is the single most important prevention strategy
- Prescription urinary diets significantly reduce recurrence
- Regular urinalysis (every 3-6 months) catches problems early