EDIT:
He is a baby. I feel really bad taking him away but he was in a 10 gallon tank at the petstore with about 8 other babies waiting to be sold as food ):
He is really really withdrawn in the cage because he misses his old cage mates. ): I do have two ADULT rats so once he gets a smidge bigger I will be able to introduce him to my boys. :3

He appears to be a boy. His "holes" are far apart. if he is a female I have a home lined up for him :3
