Canine Urolithiasis
Calcium oxalate uroliths have been increasing in frequency in dogs. While they may develop in any breed, Miniature Schnauzers, Lhasa Apsos, Yorkshire Terriers, Bichon Frise, Shih Tzus, and Miniature Poodles may be predisposed. Most affected dogs are 2-10 yr old. Hypercalciuria leading to calcium oxalate stone formation can result from increased renal clearance of calcium due to excessive intestinal absorption of calcium (absorptive hypercalciuria), to impaired renal conservation of calcium (renal leak hypercalciuria), or to excessive skeletal mobilization of calcium (resorptive hypercalciuria).
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