Chewing is one of the most natural and beneficial behaviours dogs can engage in. It offers more than just a way to pass the time or keep teeth clean. Chewing can support a dog’s emotional state, aid learning and the processing of experiences, and contribute to their overall sense of wellbeing.
Yet chewing is sometimes overlooked or misunderstood as just a way to manage 'boredom'. Some dogs may not immediately find chewing engaging or accessible, especially if they’ve had limited opportunities. But with the right support and environment, it can become a valuable part of helping them feel safe and make sense of the world.
Let’s take a closer look at the science of chewing, and how we can use it thoughtfully to support dogs, especially those who are anxious, fearful, or sensitive.
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When a dog chews, they engage not only their jaw muscles, but also key areas of the brain involved in emotional regulation and sensory processing. Chewing activates the parasympathetic branch of the autonomic nervous system, which promotes physiological calm and emotional regulation.
Research in dogs now shows that chewing does more than simply occupy them. It supports learning, recovery, and emotional regulation. In one study, dogs given a long-lasting chew after a discrimination task reached the learning criteria in fewer sessions and showed physiological signs of reduced arousal (Moesta et al., 2025). Other research has shown that chews can also support calmer emotional states during separation, even more effectively than treat dispensing toys (Flint et al., 2023).
Although any food based activity can offer short term distraction, only dogs with chews showed more sustained low arousal and positive emotional states across the session. This suggests that chewing may have a uniquely longer lasting calming effect compared to other types of food based enrichment.
These findings align with research in other mammals. Studies in humans and rodents show that chewing influences stress hormones, heart rate variability, and activity in parts of the brain linked to emotional regulation. Because these biological pathways are similar across species, we can draw on this research to support chewing as a behaviour that promotes emotional wellbeing in dogs.
This shift isn’t just comforting — it creates the conditions dogs need to feel safe, connect, and process the world around them. When dogs feel safer in their body, they are more able to process information, engage socially, and respond to supportive learning opportunities.
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Another fascinating aspect of chewing is its potential role in how dogs process experiences. You may have observed this in your own dog: after a challenging situation, a period of chewing is often followed by a more settled state. Dogs may spontaneously choose to chew after new or intense experiences, and in doing so, they are likely helping their nervous system integrate and digest what has just occurred.
This concept aligns with findings from both human and animal studies showing that repetitive oral behaviours can support recovery from stress and improve learning retention. For example, chewing gum has been shown to reduce stress hormone levels in humans following cognitive tasks (Abe et al., 2011). The canine learning study mentioned earlier (Moesta et al., 2025) further supports this: chewing after learning enhanced memory consolidation and performance, suggesting a clear link between chewing and cognitive emotional processing.
In my experience, many dogs choose to chew during or after ACE Free Work sessions. It is not unusual to see a dog pause mid exploration to engage with a chew, as if they are processing what they have just encountered. This is one reason I build opportunities for chewing into Free Work setups, not just as enrichment, but as a way to support emotional integration. Chewing can offer a moment of organisation, grounding, and self regulation — a way for the dog to process and integrate what just happened.
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Observation of chewing can also give you valuable insight into your dog’s current emotional and physical state. Here are some things to observe:
Over time, you may start to recognise patterns in how and when your dog chooses to chew, and what this tells you about their inner experience.
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Chewing is so much more than a pastime — it is a behaviour that supports the nervous system, aids the processing of experiences, promotes emotional wellbeing, and even enhances learning. With research now supporting what many of us have observed in practice, we can confidently include chewing opportunities in our dogs' daily lives and behaviour support plans.
This is one reason I include opportunities for chewing in ACE Free Work and many behaviour support programmes. Observing how, when, and why dogs choose to chew gives us another window into their emotional life and another way to help them feel safe, supported, and able to process their world.
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Inside the Confident Canine Hub, we explore real life strategies and behaviours like chewing that support safety, regulation, and learning in everyday situations. Whether your dog is anxious, reactive, or simply navigating a world that sometimes feels too much, the Hub offers practical, science based support to help you and your dog build safety, trust, and progress that lasts.