In one sentence, describe what the following article is about:

Shih Tzus love their people, but they're not as people pleasing as other breeds. They tend to be stubborn and may not consistently follow your rules. A Shih Tzu's mood is dynamic. She may be willing to sit and stay one day in order to get a treat, but may show no interest in the treat the next day. You can't always use the same training tactics with a Shih Tzu. You might have to switch up how you reward and punish behavior. If your Shih Tzu is ignoring food one day, try rewarding her with praise, toys, or a walk. Shih Tzus are a highly intelligent breed and expect rewards for good behavior. Have a variety of ideas on hand to reward your dog for being good. Although Shih Tzus can be notoriously difficult to train due to their stubborn streak, being firm with them without resorting to scolding or heavy discipline, is an effective means of training. If your Shih Tzu is acting out or misbehaving, it's better to simply ignore the behavior. Do not give in to jumping, biting, or other attention grabbing behaviors. Do not make eye contact with your Shih Tzu if she misbehaves and do not speak to her or touch her. If your Shih Tzu realizes certain behaviors do not result in attention, she'll cease using them. Always praise a Shih Tzu for behaving well. Shih Tzus enjoy human interaction and affection and are willing to work for praise. Positive reinforcing good behaviors while ignoring bad ones is a great way to get your Shih Tzu to behave. Shih Tzus are great pets, but tend to be one person dogs and prefer homes with more mature family members. Children under the age of 3 might not do well with a Shih Tzu as they'll fail to understand the breed needs boundaries. If you have young children, consider opting for a different breed or keeping your kids and your dog separate.

Summary:
Allow for flexibility. Only use positive reinforcement when training. Do not allow your Shih Tzu around young children.