Our female rat, Sugar, recently started drooling (her chin is constantly wet), and her saliva smells awful! It looks like she also may have some difficulty drinking, swallowing and extending her tongue from her mouth; when she tries to give her little kisses, she barely sticks her tongue out. Her mobility is fine though. She also seems to be losing weight. I can't find anything online about rats drooling and having a hard time swallowing...has anyone seen this before? ??? She's always been very social and sweet, but now she's almost clingy and scared...reluctant to go back in her cage with her two cage mates after being cuddled. Thoughts?? Thank you!!