Shih Tzu anxiety can include stress around noise, handling, unfamiliar situations, or being left alone. It is not diagnosed from one yawn, one bark, clinginess, or a dog following you into another room. It is a pattern involving the dog’s body, behavior, context, and ability to recover after a possible trigger.

For a Shih Tzu, that distinction is especially important because panting, reduced activity, poor sleep, irritability, or reluctance to move can also overlap with heat stress, pain, breathing difficulty, eye discomfort, or another medical problem. Anxiety may be part of the picture, but it should not become a shortcut that hides physical illness.

Quick answer: Possible Shih Tzu anxiety symptoms include pacing, trembling, hiding, scanning, panting when not hot, repeated lip licking or yawning, inability to settle, vocalizing, appetite changes, destruction, elimination changes, and escape attempts. Look for several signs occurring in a meaningful context. Sudden, severe, or persistent changes need a veterinarian or qualified behavior professional.

These words are often used interchangeably, but they describe different parts of a response:

  • Stress is the body’s response to a demand or challenge. It can be brief and does not always indicate a disorder.
  • Fear is a response to a present or perceived threat, such as an unfamiliar person moving toward the dog.
  • Anxiety involves anticipation of possible danger or an uncertain outcome. The trigger may not be present yet.
  • A phobia is an intense and disproportionate fear response, often associated with a particular class of events such as noise.

The Merck Veterinary Manual overview of behavior problems in dogs explains that fear and anxiety can contribute to avoidance, escape, vocalization, destruction, elimination, and aggression. Those behaviors still require context: destruction during every absence is different from chewing caused by puppy exploration, and growling during painful handling is different from barking at a window.

Shih Tzu anxiety and stress signs to observe

1. Changes in posture and facial expression

A worried dog may lower the body, lean away, turn the head, pin the ears, tuck the tail, show the whites of the eyes, or hold the mouth tightly closed. A dog may also become very still rather than moving away.

No single feature has one fixed meaning. Ear and tail shape, coat, camera angle, excitement, fatigue, and the immediate setting all affect what you see. The American Veterinary Society of Animal Behavior’s guide to canine facial expressions and body postures emphasizes reading the whole dog rather than isolating one signal.

2. Pacing, scanning, hiding, or inability to settle

Repeated movement between rooms, watching doors or windows, startling at ordinary sounds, hiding behind furniture, or changing resting places over and over may suggest that the dog does not feel safe enough to relax.

Compare the behavior with the dog’s normal pattern. A brief check of the hallway after a noise is not the same as prolonged vigilance that prevents rest. Note how long the response lasts and whether the dog returns to baseline after the event ends.

3. Panting, trembling, or drooling

These signs can occur during fear or anxiety, but they are not behavior-only symptoms. Panting can also accompany heat, exertion, pain, respiratory disease, nausea, or medication effects. Trembling can have behavioral, temperature-related, neurologic, metabolic, or pain-related causes.

Because Shih Tzus are brachycephalic, breathing changes deserve particular caution. Labored breathing, open-mouth breathing at rest, blue or gray gums, collapse, or rapidly worsening distress is not something to monitor as “anxiety.” Seek emergency veterinary care. The separate guide to Shih Tzu breathing problems and BOAS signs explains the respiratory red flags.

4. Repeated lip licking, yawning, scratching, or self-grooming

Dogs may lick their lips, yawn, shake off, scratch, or sniff during a socially difficult moment. These actions become more informative when they repeat, appear alongside avoidance or muscle tension, and stop after distance from the trigger increases.

They can also have physical explanations. Lip licking may accompany nausea or oral pain; scratching may reflect skin disease; repeated licking of one body area may indicate irritation or pain. Do not assume a repetitive action is emotional without considering health.

5. Appetite and sleep changes

A dog who will not take food in a particular setting may be too worried to eat. Persistent appetite loss, however, can reflect many medical problems and needs veterinary advice. The same applies to sleep: temporary vigilance during a thunderstorm differs from several nights of restlessness with panting, discomfort, or repeated position changes.

Track the change against the dog’s own baseline. Record when it began, what else changed, and whether eating or sleep returns to normal when the setting changes.

6. Vocalizing, destruction, elimination, or escape behavior

Barking, whining, howling, scratching doors, damaging exit points, urinating, defecating, or trying to escape can occur during intense distress. They can also arise from incomplete house training, limited access to toileting, environmental sounds, frustration, exploration, or medical disease.

Punishment after the event cannot teach the dog what to do during the earlier emotional state. It may add fear when the owner returns. The AVSAB humane dog-training position statement supports reward-based methods and advises against aversive techniques.

Common contexts that can trigger a stress response

The trigger is whatever predicts difficulty for the individual dog, not whatever seems objectively harmless to a person. Useful contexts to investigate include:

  • unfamiliar visitors, direct reaching, crowding, hugging, or being picked up;
  • veterinary, grooming, eye-care, ear-care, or nail-handling situations;
  • fireworks, storms, alarms, construction, appliances, or other sudden sounds;
  • another dog, a person, or movement visible through a door, window, or fence;
  • a move, household schedule change, new family member, or loss of a familiar person or animal;
  • confinement, travel, slippery flooring, stairs, or a location associated with discomfort;
  • being left alone or separated from a particular person; and
  • pain, sensory change, respiratory difficulty, gastrointestinal discomfort, or another health problem.

A list of “common triggers” is only a starting point. The important question is what reliably happens before and after the behavior in this dog.

Shih Tzu separation anxiety: signs and context

Shih Tzus can develop separation-related distress, but breed identity or clinginess alone cannot establish that a dog has it. A dog can follow a person at home and rest calmly when left; another may appear independent while people are present but panic shortly after departure. The individual pattern before, during, and after an absence matters more than the breed label.

Possible separation-related signs include persistent vocalization, pacing, panting, drooling, destruction around exits, elimination, refusal to eat, or escape attempts that begin in relation to departure. Some dogs respond to any isolation; others react to the absence of one person. Noise outside, confinement distress, and incomplete house training can produce a similar report.

Video recorded from before departure through the early part of an absence can help a veterinarian or behavior professional see onset, duration, and recovery. It should be used to understand the pattern, not to provoke the dog or repeatedly test how long panic lasts.

Territorial-looking behavior can have several causes

Barking at the window, rushing the door, or reacting behind a fence is often called territorial behavior. The same visible response can involve fear, barrier frustration, alerting, learned reinforcement, or guarding of a location or person.

Read Are Shih Tzus Territorial? for the distinctions and safety warning signs. If the behavior appeared suddenly, occurs during touch, or includes new irritability, first consider pain or illness with a veterinarian.

Medical problems that can resemble anxiety

Behavior and health are not separate systems. The Cornell guide to anxious behavior recommends veterinary involvement because health changes can affect behavior.

Examples of overlap include:

  • panting or restlessness from pain, heat, breathing difficulty, or nausea;
  • hiding, irritability, or growling when touch or movement hurts;
  • house soiling associated with urinary, gastrointestinal, mobility, cognitive, or endocrine problems;
  • startle or disorientation associated with vision, hearing, neurologic, or cognitive change;
  • poor sleep associated with itching, pain, respiratory problems, or urinary urgency; and
  • appetite change associated with dental pain, nausea, systemic illness, or medication.

A new behavior in an adult or senior dog, a rapid change in intensity, or a cluster of physical and behavioral signs makes a veterinary examination particularly important. See Sick Shih Tzu: signs of pain or illness for a broader observation framework.

What to record before asking for help

Good notes reduce guesswork. Without deliberately recreating a frightening situation, record:

  • the date, time, location, people, animals, and relevant sounds;
  • what happened in the minute before the behavior;
  • the earliest body-language change you noticed;
  • the behavior’s duration and intensity;
  • what happened immediately afterward;
  • how long it took the dog to eat, rest, play, or otherwise return to baseline;
  • changes in appetite, sleep, stool, urine, movement, breathing, skin, eyes, or medication; and
  • short video captured from a safe distance when doing so does not increase risk.

This is not a home diagnostic test. It is a clearer history for the veterinarian or behavior professional.

Safe principles while you arrange assessment

When a dog is showing fear or distress, prioritize safety and reduce pressure. Increase distance from the suspected trigger when possible, allow access to a quiet resting area, and avoid cornering, forced contact, or punishment. Keep children and visitors away from a dog who is hiding, stiff, growling, or trying to escape.

Do not give human anti-anxiety medicines, sedatives, supplements, or another pet’s prescription. Medication decisions require a veterinarian who can consider diagnosis, body weight, other drugs, organ function, and the behavior plan.

For ongoing anxiety, ask about a qualified reward-based professional. Severe cases may need coordination between the primary veterinarian and a veterinary behaviorist. A plan should be tailored to the dog’s triggers, medical status, threshold, home environment, and safety risks.

When to contact a professional

Contact a veterinarian promptly when behavior changes suddenly, physical symptoms occur, pain is possible, appetite or sleep is persistently affected, or the dog cannot return to baseline. Seek urgent or emergency care for breathing difficulty, blue or gray gums, collapse, repeated vomiting, suspected poisoning, serious injury, or marked neurologic change.

Professional behavior help is warranted for panic, repeated escape attempts, self-injury, aggression, biting, severe noise fear, or separation-related distress that interferes with welfare. Do not punish growling or other warning signals. Create distance and prevent access to situations in which a bite could occur.

Key takeaway

Shih Tzu anxiety symptoms make sense only as a pattern. Observe the whole body, the setting, the timing, and recovery. Rule out medical contributors, especially when the change is new. Respect warning signals, avoid punishment, and use qualified help when distress is persistent, severe, or unsafe.

For related context, read the guides to trust and attachment signs, common Shih Tzu behavior problems, and Shih Tzu exercise needs.

Sources and further reading

This article provides general education and does not diagnose anxiety or prescribe a behavior or medication plan. A veterinarian or qualified reward-based behavior professional must assess an individual dog.