My 10 month old yellow lab has two large swollen lymph nodes on her cheeks/jaw. She suckles her stuffed animals 3 to 4 times a day. She doesn't seem to be in pain but I worry that it may be. The lumps on her cheek are very noticable. I have brought her to a couple of vets but no one can figure out what it is. Have you ever seen or heard of a medical situation related? She also chatters her teeth or jaw when trying to relax..