2. They are not made for extreme weather conditions
Shih Tzus don't require very much special care, but one thing that all owners should know is that these dogs are not made to withstand extreme weather conditions. This is particularly true during the summer, when the dog is more prone to heatstroke because of its face shape. These dogs are made to be indoor dogs, and while you can certainly take them out for walks or play outdoors or nicer days, it is best to keep them indoors when it is too hot or cold outside.