Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Chew

My 18-month old Lab loves this Nylabone. It's the perfect size for him. It has lasted a few months and he normally spends time chewing it each night. He is a strong chewer, but not the strongest I've seen. I recently ordered another since he gnawed his first one to about half the original size. I wouldn't allow him to chew this much past the half way point as it could become a choking hazard. I gave this 4 stars since it is not really a healthy material to ingest. Small pieces are not supposed to hurt the dogs, but there is no nutritional value.A natural alternative to this would be Deer Antlers. They are more expensive, but will last quite a while. Our dog loves those as well, but the Nylabones provide a nice variety so he doesn't get too bored with any one chew.