“having received dietary advice from our vet, we purchased Hill’s Prescription Diet T/D for our previous 2 cats(both passed a few years ago now) - they loved it & preferred it over all other cat biscuits, if there were other biscuits in their bowls they would always eat the ‘T/D’ 1st until it was gone then they would eat the other stuff. it is exactly the same for our 2 current cats - ‘T/D’ is also their 1st preference, that says something about the product, hence the reason we continue to use ‘T/D’”