This is about 90% accurate, so some tumors will need to be biopsied to diagnose. Osteosarcoma: This can be external, just on the jaw bone, and not involve the mouth at all. Without having the ...

A man with a huge tumor on his jaw finally got life-changing surgery, after it got so big he almost couldn't eat or speak.

Some of the possible causes of a tumor in a dog's mouth or on the jaw include the following: Osteosarcoma: This can be external, just on the jaw bone, and not involve the mouth at all. Without ...