When the weather is too cold or too hot, it is important to provide indoor exercise for your Shih Tzu. This dog does not need to be at constant play; a quick burst of a fun game for about 1/2 hour to 45 minutes will be sufficient. There are many games that you can play with your Shih Tzu to keep him moving and to help release pent-up energy.
One of the activity games you can play with your dog is Hide and Seek. This is a game that your dog will love and begin to look forward to. It is best to begin with a new and special toy that is only used for this game. You begin making sure your dog is paying attention to you. Once his gaze is watching your hand, hide the toy in an easy area such as under a couch cushion. Encourage your dog to find it, act excited and pretend you are looking for it also.
Your Shih Tzu will know where you hid it and will just need to search for a moment or two to find it.