Royal Canin Feline Neutered Young Female is specially formulated for female cats from neutering to 7 years old. The food is designed in such a way as to increase the urine volume which in turn reduces the concentration of struvite and calcium oxalate in the urine. This helps to reduce the formation of bladder and kidney stones from these minerals. The high protein content and increased levels of L-carnitine help to promote a lean body mass and a mixture of dietary fibres helps with hairball elimination. The kibble has a specially designed texture and shape which helps to clean the teeth when the cat bites into the biscuit.