Iams Advanced Nutrition with ocean fish is a 100% complete and balanced pet food for senior cats. Tested according to standard EN 13430:2004. Please check with your local authorities. IAMS Advanced Nutrition with Ocean Fish is a 100% complete and balanced senior dry cat food, suitable for cats aged 7+ years. Our advanced nutrition recipes are adapted to support your cat's health, providing all the nutrients your cat needs. IAMS senior cat food with ocean fish contains 87% animal protein, out of total protein, to provide the foundation of their natural diet and taurine to support a healthy heart.