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.

Let me give you an example: I have bought several of the Vitality canned dog food products and have found them all to be of good quality. The product looks more like a stew than a processed meat and it smells better. My Labrador is finicky and she appreciates this product better than most.
The answer to this example can be: Positive
Here is why: It's a positive review because the owner of the dog is satisfied with the product and mentioned that their dog appreciates the product.

OK. solve this:
My dog was on a bland diet (boiled chicken & rice) so his poop was usually solid but a few days after eating 1 Greenie a day, his poop became more liquid-y and green. Not sure if Greenies was actually the cause until I googled and read on various dog forums about how Greenies have affected other dogs. Stopped giving out my dog Greenies and have thrown them away. BEWARE, Greenies CAN be bad, so watch your dog after giving them out.
Answer:
Negative