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.

Example input: 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.
Example output: Positive
Example explanation: It's a positive review because the owner of the dog is satisfied with the product and mentioned that their dog appreciates the product.
Q: My German Shepherd took less than 1 minute to take off each cover and that included the time to eat the treat. I was looking for more of a challenge for him. Guess he is one of the too smart for his own good, or at least too smart for this toy. The one star is for my dog, it might work well for others.
A:
Negative