my hamster is nearly 18 months old now, hes always been a dark brown colour and looked just like a little bear, now some of his fur is changing colour at the back end hes going a light sandy colour, his furs fine, his skins fine it just looks so odd his head and his front legs are brown and his back legs and his back are this sandy colour, this is my first hamster so i just wondered if this happens, if its happened with anyone elses?