Evil Hamster

I once had a hamster for half a year. We decided to get a hamster. So, we went to the nearest Petco and chose out the cutest, little dwarf hamster EVER!!! He began a sweet hamster at the pet store and when we got home he turned evil. He bit as HARD as possible! A couple weeks later, his eyes turned RED!!! He was truelly evil. A MAD HAMSTER!!!!