Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I'm not giving this to my puppy!

I've got the T-Rex one. It doesn't feel like rubber, it feels like hard plastic! It's also pretty sharp around the edges. I'm surprised at the number of 5 star reviews. Maybe it's just me but I'm not giving it to me puppy 'cause I'm afraid it might hurt his gums.