Dear Ann Cannon • Help! My son and daughter-in-law are planning to visit us this summer. My husband and I are eager to see them, but there’s a catch. They’ve asked if they can bring their dog with them. They don’t have children, so their dog is their baby. It’s not that my husband and I don’t like dogs, but it’s been a long time since we’ve owned one. Also, we just spent a lot of money re-carpeting the house. The dog (who lives indoors) is housetrained, but I’m still worried about having it in our home.