Reptiles make wonderful pets. Watching their unique behaviours, routines and personalities unfold over time is one of the reasons so many of us are drawn to them. But they don’t give much away, and that’s part of what makes understanding their health so important for owners. It’s quite the learning curve, but with the right support and information, you’ll recognise these subtleties.

At Edgeworth Animal Medical Centre, we’re a local, independent clinic that cares for all pets, big and small, scaly and furry. We have a real passion for exotic patients. For this article, I spoke with Jaz, one of our veterinary nurses. Not only does she work with them every day, she has a few of her own at home. Thanks to her insights and experience, here’s a helpful guide.

Why stress looks different in reptiles

Reptiles feel stress just like other animals, but they rarely show it. In the wild, weakness isn’t safe. As both prey and predators, they’re built to hide discomfort, pain and illness for as long as possible.

This can feel unfamiliar for owners who are accustomed to dogs and cats. Mammals can mask pain too, but they often show changes that are easier to spot, such as limping, vocalising or withdrawing from interaction. In reptiles, signs are far more elusive and slower to appear, making them easy to overlook and often more advanced by the time they’re taken seriously.

Stress has a significant impact on a reptile’s health. It can weaken their immune system, allowing viruses and bacteria to affect the body. Stress can also suppress appetite, and prolonged lack of eating may lead to anorexia and organ damage if it continues unchecked.

Why is distress so underestimated? Limited owner education at the time of adoption and a long-standing, outdated misconception that reptiles have a “cold-blooded brain” and cannot experience stress or complex feelings. There is no evidence to support this belief. What we do know is that this myth can delay owners from seeking veterinary care, allowing health issues to progress much further than they should.

Early signs that owners often miss

They may not seem instantly alarming on their own, but these signs indicate stress in reptiles:

Inappetence or reduced appetite
Nose rubbing
Cage surfing or repeated pacing along enclosure walls
Increased hiding
Diarrhoea
Hissing
Puffing up
Flattening the body

Because reptiles are expected to be still, silent and independent, some of these behaviours are written off as normal or commonly misread at home. For example, nose rubbing and cage surfing are often attributed to attention-seeking rather than stress or enclosure dissatisfaction, which is what they most likely indicate. They can also signal poor husbandry, inappropriate environmental conditions, or an attempt to escape.

Edgeworth - Animal medical centre reptile species specific stress behaviour

Species-specific behaviour

There is a vast array of reptilian species, and they each express stress in their own ways because their natural behaviours, environments and survival strategies vary.

Bearded dragons, for example, can confuse their owners with actions like head bobbing or arm waving. People can see this as cute or playful, but it is actually a sign of dominance and submission. This happens when a larger bearded dragon is in direct view of a smaller one, even in separate enclosures. The larger dragon will head bob to assert dominance, while the smaller one responds by waving its arm. These behaviours can also be directed towards humans and are frequently left uncorrected. Sometimes, simple changes, such as moving the terrarium to a quieter or less visually busy part of the house, are enough to reduce that stress.

If you’re unsure whether something is normal for your reptile’s species, it’s always best to ask a vet who is familiar with exotic species. Remember, prompt care is crucial as reptiles can deteriorate rapidly.

Husbandry factors that commonly cause stress

Reptile owners genuinely want to do the right thing. So we understand that stress related to husbandry is rarely ever the result of neglect. It comes from small gaps in information or advice. Because reptiles depend so heavily on their environment to function normally, even minor inaccuracies in setup can have a cascading effect on their health over time. Here is a clear breakdown of stressors:

Husbandry factor	How it causes stress	Common misunderstanding
Heating	Reptiles are ectothermic and rely entirely on external heat to regulate body temperature. Incorrect temperatures disrupt metabolism, immunity and overall health.	Providing a heat source without a thermostat is enough.
Temperature control	Without a thermostat, temperatures can fluctuate or exceed safe ranges, even if a heat source is present.	Assuming the enclosure temperature is correct based solely on the setup.
Temperature monitoring	Ambient temperatures need to be checked with a reptile-specific handheld infrared thermometer.	Relying on built-in gauges or visual checks instead of accurate measurement.
UVB lighting	UVB is essential for metabolism, vitamin absorption, immune function and circadian rhythm. Inadequate UVB leads to a gradual health decline.	Believing visible light means UVB output is still effective.
UVB replacement	UVB output degrades over time, and lights should be replaced every six months.	Keeping UVB lights longer because they still appear to be working.
Natural sunlight	Artificial UVB cannot fully replicate the sun. Reptiles need at least 30 minutes of natural sunlight per week.	Assuming UVB lighting alone meets all requirements.

A case study on Yoshi

A one-year-old bearded dragon named Yoshi was brought to Edgeworth Animal Medical Centre after his owner noticed he had started pacing his terrarium, glass surfing and stopped basking on his usual ledges. This was unusual.

During his examination, our veterinarian recommended bloodwork to help understand what might be driving these changes. The results showed a stress leukogram, indicating elevated white blood cells, along with early signs of disease. We also found that Yoshi had a mild respiratory infection, likely linked to stress and a weakened immune system.

Because his owner recognised the behavioural shift early, Yoshi was able to receive timely care. And all it took to sustain his recovery at home was some simple adjustments to his enclosure, like increased temperatures and additional hiding spaces.

Is your reptile trying to tell you something?

With all of the subtleties we’ve talked about, it won’t come as a surprise that proactive health care is the best possible way to ensure a reptile pet’s long-term health. Whether you have a lizard, snake, or turtle, regular veterinary checkups provide a good benchmark for what is normal for your pet. This way, when behaviours shift and start signalling stress, we can act before it turns into a major illness.

At Edgeworth Animal Medical Centre, we’re here to help. If you have questions about your lovely reptilian companion, contact our friendly team today or book an appointment now.

By Dr Kimberley Earl

Recognising Signs of Stress in Reptiles

Why stress looks different in reptiles

Early signs that owners often miss

Species-specific behaviour

Husbandry factors that commonly cause stress

A case study on Yoshi

Is your reptile trying to tell you something?

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