Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A lifesaver for a large breed puppy in training

Pros: The Extreme Kong is incredibly durable. It's large enough that I don't have to worry about her swallowing it. I usually fill it with peanut butter. You can put it in the freezer if you want the PB to last longer. My couches are thankfully in once piece due to this toy.Cons: The one shortcoming is the difficulty in cleaning. It's probably easiest to clean using a tooth brush and some dish soap.Bottom Line: Worth the money if your dog is a big chewer.