Instruct: Classify the given review into positive or negative sentiment.
Query: Not Big Enough for Chinchilla

I got this wheel for my chinchilla, who is 3 years old, and it is simply not big enough for him. I did research on it that really said even a 14" was too small bc it hurts their backs but this was all they had in the bet store :/ Do not buy for chinchilla, spend the extra money and get him an 18" wheel. Chin will be much much happier :)