I'm freaking out! My rat has gained SO much weight in the time span of like 1-2 weeks. When I pick her up I can feel her SPINE and her RIB CAGE. It gives me goosebumps and I'm SO WORRIED about her health. I'm really wondering what wrong. If you guys can give literally ANY information on what she could have or why she's like this it would be really helpful. Thanks in advance!