Brook and Tundra have always been my smallest rats. Well, it took Tundra about 4 months but she became the biggest. But in the past 3 days or so Brook has become extremly fat. I'm a little worried. I don't know why she has become this fat. I felt her stomach for small lumps or something that felt supspiouse but he stomach feels the same as Tundra's and Hope's.
Do you know why her tummy would get to ge this big?