Subtle behavioral changes often signal a therapy dog is ready to stop working.

Reduced enthusiasm and disengagement are often the earliest signs that a therapy dog is ready to step back.

Therapy dogs that comply but stop initiating interactions may be overworked.

Older age is a familiar marker for human retirement, so it’s tempting to extend the same logic to therapy animals. In practice, however, there is no clear cutoff or evidence-based guideline telling guardian-handlers when their canine partners should stop working.

The retirement age of therapy dogs cannot be determined solely by age, as dogs’ lifespans are highly variable. Giant breeds such as Great Danes and Irish wolfhounds may live six to 10 years. In contrast, toy breeds, such as Chihuahuas and Yorkshire terriers, may remain active and healthy at 15.

As a result, age is an unreliable metric for retirement. What matters more is the dog’s experience of the work, as evidenced by their energy, interest, and comfort. Over time, attentive handlers may notice small shifts in their dog’s behavior or energy that suggest it may be time to consider reducing or stopping community visits.

Dogs cannot tell us when they are tired, when something hurts, or when they would rather stay home. They rely on us to notice and accurately interpret behavioral changes, but those changes are often subtle. Most dogs are stoic by nature, having evolved to suppress visible signs of weakness. As a result, gradual shifts in their daily........

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