You are given a review of Amazon's food products. Your task is to divide them into two classes: negative or positive, depending on the content of the review.

I have fed the chicken and duck version of these--though now the reviews regarding china I find disturbing. Regardless, the beef liver version of these are not a hit with my pup and seem to be a very odd, plastic texture. The duck and chicken are both great--but I will be investigating the source of the food.
Negative