Ask Amy: Dad and dog might not play well together

Dear Amy: My 26-year-old daughter’s boyfriend just relocated to another city. Our daughter asked if he could travel the several hours to our home and stay with us over the holidays.
We welcome him. They have been dating for the past two years and this separation has been hard on her (she is still attending a local college and lives at home). She plans to join him in his city next semester. The rub came when she announced his plans to bring his mid-size dog with him.
I told her that since w