So, in my mistake of going to our local pet store, I fell in love with a sweetie and got her right away. She's the black and white tailless chunker. (I did not look up any info on tailless rats until I got home. She was born tailless - I can tell since there's a tiny nub/flap of skin where her tail is supposed to be and her spine does not extend out to it either.) Anyways, once I did do my research, there were a lot of a descriptions on how tailless rats are stockier and bigger. I'm hoping it's just that, and she's not pregnant..there's a pretty low chance she is pregnant anyways, since all the males sold there are neutered. Any thoughts on the pictures? My perception might be screwed up though since my other girl is a double rex, younger and pretty skinny..