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.

My dogs love the taste of it. my worry is the next day one of them vomit the entire food he just ate plus the one from the previous day. I have to said I did not gradually change to this food, so maybe that is the reason. but I notice lots of urine more than normal. I just don't feel comfortable feeding this food to my dogs.
Negative