To avoid bladder stones, dogs must drink fresh water several times daily and have frequent opportunities to urinate, states Long Beach Animal Hospital. Dogs need more than one cup of water per cup of dry food. Diets lower in protein, calcium and sodium can prevent calcium oxalate stones.
Foods such as Hills Prescription Diet S/D on a short-term basis and Hills C/D on a long-term basis can treat and prevent struvite bladder stones, the most common type of stone, notes Long Island Animal Hospital. The second most common stone is calcium oxalate, which can develop in dogs that consume foods high in calcium or oxalates or that boost calcium levels, including high-protein foods, spinach, milk products and table salt. Hills K/D can prevent calcium oxalate stones in older dogs with kidney problems.