dalmatians can have a breed specific inherited metabolic defect which prevents them from processing protein like other dogs - and causes formation of sediment in the urine, which can form life threatening stones in their bladder (urate urolithiasis, very different from oxalate or struvite crystals or stones).
research has shown that animals affected by this genetic problem do much better on an overall low-protein diet, with protein sources such as eggs, cheese, and milk products rather than meat.