7. Make Sure They're Secure
Although many people would prefer their dogs hanging out of the window, Shih Tzus are not a breed known for that and securing them in the backseat, just as if they were a kid, is the best way to travel with them while in a car. You can more easily do this with a travel carrier or crate.
8. Keep the Temperature Normal
Keep the temperature at a level that is similar to what your dog is used to. Make sure that your dog doesn't overheat while traveling, but also make sure that the temperature isn't too cold. You want to make your dog as comfortable as possible while traveling.
