We had the same questions at first. We bought a 3 level cat cage from Amazon. Put in the house for about a month before first trip. Our indoor cat really liked it and would nap all day in the cage on the soft padded shelf with the door open. We put a potty box and a scratching post in there as well. When we did travel the first time with the cat, we had him in the truck with us in a carrier and the cage was packed in the Toy Hauler. When we arrived at our camping location, we put him in the cage in the Toy Hauler. Our cat knew he was home and not in a strange place. After awhile, he would explore the trailer. No problem the first time. Of course we have a "kitty Holster" and a leash for going outside. Good luck!