My russian blue is 8 (he had all of his teeth out) and is a "more experienced" cat!
We have moved to the "more experienced" biscuits which seem to be easier to eat.
He actually looks at me funny if i say "mature" :)
My cat (a pure bred russian blue!) is allergic to the commercial cat foods (think whiskers/go cat) and has to eat science diet/tuna. (otherwise his hair falls out!)
Could you spend a little more (i know cat food can be expensive!) but in my instance, it really helped!
