Picking a tree with your pooch is one of the best festive activities you can enjoy together. Wander around the rows of firs and see which one Fido likes the smell of the most. The Rocks Estate in Bethlehem, NH, Gallagher's Pumpkin and Christmas Trees in St. Petersburg, FL, and Grandma Buddy's Christmas Tree Farm in Sebastopol, CA, are just a few pet-friendly Christmas tree farms to visit with Fido.