Anxiety and Stress in Dogs

Anxiety in dogs manifests differently depending on the trigger, the individual dog and the severity. Common behavioural signs include excessive panting or drooling without physical exertion; trembling or shaking; pacing, inability to settle or restlessness; destructive behaviour (chewing furniture, scratching doors, digging at flooring); excessive barking, whining or howling when alone or during noise events; hiding or seeking constant physical contact with the owner; loss of appetite or refusal to eat in specific situations; and inappropriate urination or defecation in a housetrained dog.

Physical signs are equally important: dilated pupils, pinned-back ears, tucked tail, lip licking, yawning (when not tired) and whale eye (showing the whites of the eyes). These are often missed by owners who interpret them as the dog being "naughty" rather than distressed.

If your dog shows multiple signs consistently in specific situations (storms, being left alone, encountering strangers), a pattern of anxiety is likely. If the behaviour is new, sudden or accompanied by other health changes, consult your veterinarian to rule out pain or medical causes that can mimic anxiety.

Noise sensitivity is a common trigger, affecting approximately 32% of dogs (Salonen et al., Scientific Reports, 2020, view study). Thunderstorms, fireworks and construction noise are the primary triggers. Noise fears typically worsen over time if left unaddressed and can generalise from one noise type to others.

Separation anxiety affects approximately up to 52% of dogs and is characterised by distress behaviours (vocalisation, destruction, inappropriate elimination) that occur exclusively when the dog is separated from their attachment figure. True separation anxiety is distinct from boredom-related destruction and requires a structured desensitisation program.

Generalised anxiety describes dogs that appear chronically stressed across multiple contexts. These dogs may be hypervigilant, startle easily, struggle to relax even in familiar environments and show chronic digestive issues linked to sustained cortisol elevation.

Situational anxiety covers specific triggers such as veterinary visits, car travel or encounters with unfamiliar dogs or people. These are typically the most responsive to targeted intervention because the trigger is predictable and controllable.

The evidence base for calming supplements in dogs varies significantly by ingredient. Transparency about this evidence is important for making informed decisions.

L-Theanine has the most direct canine evidence among natural calming ingredients. Pike et al. (2015) published an open-label study of 18 storm-sensitive dogs in the Journal of Veterinary Behavior (view study). Dogs receiving daily L-theanine showed a significant decrease in owner-reported global anxiety scores during thunderstorms and a reduced time to return to baseline behaviour after storms. Michelazzi et al. (2015) found that dogs receiving L-theanine combined with behavioural therapy showed greater reduction in noise phobia symptoms than dogs receiving behavioural therapy alone. Important caveat: both studies were unblinded and lacked placebo controls, meaning caregiver placebo effects cannot be ruled out. The evidence is promising but not yet definitive.

Ashwagandha (Withania Somnifera) has extensive evidence in human clinical research as an adaptogen that modulates cortisol levels and reduces perceived stress. A 2019 systematic review in the Journal of Alternative and Complementary Medicine analysed five human RCTs and found significant reductions in stress and anxiety scores. However, published clinical trials specifically in dogs are limited. The veterinary use of ashwagandha is based primarily on extrapolation from human data and traditional use in veterinary herbal medicine, not on canine-specific clinical trials.

St John's Wort (Hypericum Perforatum) is well-established in human medicine for mild to moderate depression, with multiple systematic reviews supporting its efficacy. In veterinary medicine, published clinical data is limited.

No calming supplement should be considered a standalone treatment for moderate to severe anxiety. The most effective approach combines behavioural modification with supplementation or, where clinically warranted, veterinary-prescribed anxiolytic medication.

Petz Park Stress and Anxiety for Dogs combines L-Theanine, Ashwagandha (Withania Somnifera) and St John's Wort (180mg per scoop) in a grain-free powder format. The formulation is designed to address both acute situational anxiety and chronic stress through complementary mechanisms: L-Theanine promotes calm alertness through GABA modulation, Ashwagandha supports cortisol regulation as an adaptogen and St John's Wort supports mood through serotonin pathway modulation.

The multi-ingredient approach reflects the complexity of canine anxiety, which rarely responds to a single mechanism of action. Some dogs respond primarily to the immediate calming effect of L-Theanine, while others benefit more from the sustained adaptogenic effect of Ashwagandha over weeks of consistent use.

Dosage: depends on your dog's size, please see product page for details. For known anxiety triggers (storms, fireworks, travel), some owners begin supplementation 3 to 5 days before the anticipated event. Effects may be noticeable within 30 to 60 minutes for acute situational use, while full adaptogenic benefits from Ashwagandha typically develop over 4 to 6 weeks of consistent daily use.

Supplements work best as one layer within a broader anxiety management plan. Evidence-based behavioural strategies include creating a safe space (a quiet, enclosed area where the dog can retreat during noise events, ideally introduced and positively reinforced before it is needed); counterconditioning (pairing the anxiety trigger with high-value treats to change the emotional association); desensitisation (gradually exposing the dog to the trigger at very low intensity and increasing over time); and maintaining predictable routines (dogs with generalised anxiety benefit from consistent daily structure).

Avoid common mistakes that worsen anxiety: punishing fear-based behaviour (increases stress), forcing exposure to triggers ("flooding" is counterproductive) and excessive reassurance (which can reinforce anxious behaviour in some dogs, though calmly providing comfort is generally appropriate).

For noise sensitivity specifically, a sound therapy program (freely available from organisations like Dogs Trust) can be highly effective when started weeks before the anticipated noise season and combined with positive reinforcement.

Petz Park Stress and Anxiety for Dogs receives strong ratings across verified customer reviews on petzpark.com.au. The most commonly reported benefits include calmer behaviour during storms and fireworks, reduced panting and pacing, less destructive behaviour when left alone and a generally more settled demeanour.

Customers frequently note that effects are more pronounced after 2 to 4 weeks of consistent daily use, consistent with the adaptogenic mechanism of Ashwagandha requiring sustained supplementation. Some owners report noticeable calming effects within the first few days, likely driven by the L-Theanine component.

A proportion of reviewers report no noticeable change. This is consistent with the clinical evidence: no calming supplement works for every dog, and dogs with moderate to severe anxiety may require veterinary-prescribed medication either alone or in combination with supplementation.

Calming supplements are not appropriate as a first-line response in the following situations:

Self-injurious behaviour such as breaking through windows, tearing nails attempting to escape crates or chewing through doors during separation or storms. This level of panic requires urgent veterinary behavioural assessment and prescription anxiolytic medication. Aggression linked to fear (growling, snapping or biting when frightened) requires professional behavioural assessment, not supplementation. Sudden onset of anxiety in a previously calm dog may indicate an underlying medical condition (pain, cognitive dysfunction in senior dogs, thyroid imbalance) rather than a behavioural problem. Anxiety severe enough to prevent eating, drinking or sleeping for more than 24 hours warrants veterinary assessment.

Veterinary-prescribed anxiolytic medications (fluoxetine, trazodone, clonidine, gabapentin, sileo) have stronger clinical evidence than any supplement and are appropriate for dogs whose anxiety significantly impairs their quality of life. Supplements can complement prescription treatment but should not delay appropriate veterinary care for dogs in genuine distress.