Dont worry, Im sure its nothing, but first i must ask..how old is ur rat? I have 2 female rats, and a i noticed that when they were a few months old their tails turned many different colors too. They were brown and white and pink and all weird stuff. I asked the literary reading room about it and they responded that its nothing and that its just their tails turning to their natural color. A good example is.. say a dalmation puppy born white.. later on though the spots come~so if i were you i wouldnt worry. As long as your rattie seems fine and in good shape its just another ratty doing his/her thing!
