Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't buy this - will kill your hamster!

I got a Robo Hamster and this cage last Friday.Initially, we were happy about this cage.But this water bottle didn't work! So, my hamster got dehydrated and died on Monday....This company specializes hamsters and small animals-- they should know better!I don't know how many hamsters has / will be suffered this kind of cage... but from my experience, use glass aquarium and high quality water bottle! Don't buy this cage! It'll kill your hamster!