DALLAS (AP) — Emotional-support animals are no longer free to roam about the cabin on Southwest Airlines either. The airline said Monday that it will let passengers bring trained service dogs in the cabin, but starting March 1, emotional-support animals are out. The airline says anyone who wants to bring a dog or cat on board after that will have to pay a fee and keep the animal in a carrier under a seat. Other airlines have made similar changes in their animal policies. The Transportation Department says airlines don’t have to let passengers bring an animal on board for free by claiming it provides emotional support.