Dr. Clauder's Best Filet No1 Tuna is the light culinary treat for your velvet paw. With only 81 kcal per 100g, Best Filet can be safely given as a highlight with dry food or as a reward in between. Tuna has a high protein content and is rich in Omega 3 fatty acids. Dr.Clauder's Best Filet No1 Tuna is grain-free and contains no preservatives or flavor enhancers.