Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dog destroyed it

My 10 month old Great Dane puppy loved it for about 3 weeks, then figured out that she could stick her lower jaw in the hole and rip the core out by holding the rest of the cube with her paws. I don't know if a smaller dog could have pulled that off, but once she got the core out the whole thing was ruined within a minute.