 Potassium citrate has been recommended to prevent calcium oxalate stone formation because it forms a soluble complex with oxalates and promotes the formation of alkaline urine.Dog breeds possibly prone to calcium oxalate stones include Miniature Schnauzers, Lhasa Apsos, Yorkshire Terriers, Miniature Poodles, Shih Tzus, and Bichon Frises.They are the most common stone in male dogs.