Hamster screaming

Question
This just happened so I'm not sure what to make of it. My hamster was sleeping as usual but suddenly I heard it screaming. When I went to check it, it didn't seem like there was anything wrong. Is there a possible reason for this?

Answer
Dear Vicki,
thank you for your question.
Your hamster had a bad dream. It happens from time to time, sometimes you can tell that small animals are dreaming when they twitch or move their legs like their running and sometimes they scream or squeak.
I hope I was of some help to you
Jennifer