Thanks for the reply. The mark has been there for a few months, but it only got big last week. I am constantly feeling on them to check for bumps. Our first boxer died from cancer so we're freaks about their health.
She never messes with it so that's good.
Her surgery is Monday July 30th. We had to wait cuz I'll be out of town and my husband works (i don't) so no one will be home with her afterwards.