Instruct: Classify Amazon reviews into positive or negative sentiment
Query: great, long lasting, durable bones

This is the best bone/best toy investment I have made for my dogs. I have an 11 month old airedale mix puppy and my boyfriend's dog, a chocolate lab/ german shorthaired pointer mix that is almost four and they are constant chewers- they love and destroy almost every other bone, but these are awesome. After my puppy went though some of the other nylabones, I decided to spend the money and get the galileo- it was completely worth it. She has had one bone four about five months and its not completely dead yet- I bought another one and the largest size for my other dog- they love them. These are not light chewers. The larger dog can make mince meat of a frozen beef rib bone in under five minutes, and my puppy has only been beaten by this bone, and one of the other 'souper' nylabone chews. They carry around and chew on them for at least a half hour every day, and these bones can take it! Definitely keeps their teeth clean and their breath fresh.