The biology behind why Shih Tzus destructive chewing
Shih Tzus were bred exclusively as companion dogs for Chinese royalty, meaning their entire genetic purpose revolves around human closeness — not tasks, work, or independent activity. When left alone or understimulated, they redirect their oral fixation and social frustration onto household objects as a coping mechanism. Additionally, their flat muzzle (brachycephalic structure) creates a persistent need to mouth and chew as a form of sensory engagement and jaw relief.
Why it gets worse before it gets better
Many Shih Tzu owners inadvertently reinforce the behavior by rushing over to scold the dog mid-chew, which provides the attention-craving dog exactly what it wanted — direct human interaction. Leaving a Shih Tzu alone for extended periods without enrichment items creates a pattern of anxiety-driven chewing that deepens into habit the longer it goes unaddressed.
Consistency is the mechanism of change: Even one instance where the behaviour is reinforced sets progress back significantly. The dog only persists because it has worked before.
The most common owner mistakes
These are the patterns that keep Shih Tzu owners stuck in a cycle for months or years:
Giving Affection After Chewing
Because Shih Tzus chew largely out of loneliness or attention-seeking, comforting or even scolding them after the fact rewards the emotional need that triggered the chewing in the first place.
Offering Too Many Toy Choices
Flooding a Shih Tzu with a pile of toys actually reduces the perceived value of each one, making forbidden items seem comparatively more novel and exciting.
Assuming It's Teething and Waiting It Out
Owners often dismiss chewing in young Shih Tzus as a teething phase, but without intervention the behavior transitions seamlessly into an anxiety or boredom habit that persists well into adulthood.
What a proper fix requires
Solving destructive chewing in a Shih Tzuis not a single technique — it's a protocol built across multiple phases. What genuinely works involves:
What an effective protocol looks like for this breed
The exact sequence, timing, and progression for your specific dog depends on their age, how long the behaviour has been reinforced, and your environment. That's what a personalised plan accounts for.