Hamster chews the bars of the cage
I think it is the most terrible thing when your hamster starts to chew the cage bars and the noise is just unbearable. But you should know that this is actually your fault that your hamster is neglected and bored. According to the statistic data hamsters are the third neglected pets after turtles and rabbits. To change the situation, try to rearrange his cage or get a bigger one. Make sure he has some toys to play, some carton boxes and paper to chew instead of cage bars. Invent some attractions for your pet so that he wouldn’t feel himself bored and lonely in his cage. And, probably, the most important thing you should do is to take him out to play more often.