Described herein are kits for assessing the calcium oxalate titration test of an animal as well as methods for predicting the risk of calcium oxalate stone formation. Further described herein are methods and compositions for - inter alia - lowering the specific gravity of urine and lowering the calcium oxalate titration test in felines. In particular, diets and methods utilizing certain amounts and ratios of arachidonic acid (AA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are disclosed herein.
