my best friend, renee, has three rats...two of them are siamese...she noticed one day that they seemed to be dirty, so she took them in the bathroom to give them a wash....when she looked at them in the different light, she knew that these spots were not going to come off...she washed them anyways, and she was right...she says that they started off small, but now are about the size of toonies...they are also now black...i cant remember how many spots there r, but its still wierd...do u think there is some sort of mutated gene? or r they just oddmarked?