Cats are usually the hardest to travel unless you have an exceptional cat. They must be placed in smaller transportation cages, which must be big enough for a small trash bin. They are available in various sizes and as waste containers.
Unlike dogs that can bark or cry when they do to potty, cats can't tell you when they do a potty. When you travel, you can't stop and let them get out of the car to do their business. You can also buy the best pet waste disposal bags from various online sources.
Therefore, it's smart to use a bigger cage so you can put a trash can, a food and water container, and a bed to lie on. Dogs are a very different story. Some owners get smaller carrier kennels for their smaller dogs.
Some owners who can demonstrate or compete use a cage to transport it. There are also wheels that you can buy to attach to your cage so you can pull it out instead of carrying it.
They are fantastic for owners who take part in competitions because you usually have to drive from the car to the location you specify. If you travel with your dog, there are several options. If you have an SUV, make a bed so you can lie down.
Another option is to place the cage behind you. Some owners use seat belts to attach it to the back seat belt. This way you can choose whether you want to sleep or look out the window. In this way they are close to you.