Hi there, We had our syrian male hamster for around 8 months. Just heard the strangest sound. It was kinda like a very loud screeching mixed with hissing sound. I first thought it was the Guinea pigs squabbling. It was in fact coming from the hamster who was at the time running in his ball. His never made that noise before. He is eating and drinking normally. We've put him back in his cage and all seems quiet. Anyone have any idea on what it could be?