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I would at least have her mouth examined. A bad tooth or lesions at the back of the throat or under the tongue could cause the lip licking. Any pet over 7 years old should have yearly blood work done just to make sure things are working fine on the inside. Nausea can also cause lip licking. Godo luck Dr. Jenn
There would be changes in the blod work that would sugest the pancreas is not happy-an ultrasound would give a look at it as well. Usually, they are sick-little appetite, vomiting. Could this be the start of something coming?-it may be. That is where the blood work would help guide us. Blood work values can change rapidly within a matter of days! We might be surprised and she may have a bad tooth!