Given the task definition and input, reply with output. 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 4 adult Shih-Tzus and while they do prefer it when I cook for them...... they do eat this and it has helped eliminate the brownish tear stains they get when I feed them some dry foods.
Positive