Cats can be scanned out at the security check, and there are clear regulations on subways, high-speed rails, and high-speed trains. Animals are not allowed on the train to avoid threatening the safety and health of the public. If you want to take your cat out, you can choose to drive or take a ride. This can reduce a lot of unnecessary trouble. In addition, it is best to ask the driver before taking a taxi to prevent some people from being allergic to cat hair.