If you’re a bearded dragon owner, you likely want to make sure your pet stays comfortable and healthy. One key factor is ensuring their environment doesn’t get too cold. So what is the lowest temperature a bearded dragon can survive?
Read on for a detailed look at bearded dragon temperature requirements.
If you’re short on time, here’s a quick answer to your question: the lowest temperature a bearded dragon should be exposed to is around 60-65°F. However, they do best with higher daytime temperatures in the 70s and 80s.
Ideal Temperature Range for Bearded Dragons
Daytime Temperatures
Bearded dragons require specific temperature ranges throughout the day to remain healthy and active. During the day, bearded dragons need a basking spot between 95-110°F. This allows them to properly digest their food, regulate their body temperature, and carry out their normal activities.
The ambient temperature on the cool end of the tank should be around 80-85°F. Having a temperature gradient allows your bearded dragon to thermoregulate by moving between the warm and cool areas as needed.
Daytime temperatures that are too low can lead to lethargy, poor appetite, and improper digestion in bearded dragons. Temperatures above 110°F can also cause overheating and potentially fatal heat stroke.
It’s critical to closely monitor temperatures with a digital thermometer placed at the basking spot and opposite end of the tank.
Nighttime Temperatures
At night, bearded dragons require a lower ambient temperature of around 70-75°F to simulate their natural desert environment. Dropping temperatures at night supports their circadian rhythm so they can get proper sleep.
Using a ceramic heat emitter or low wattage night bulb can help maintain the lower nighttime temperature if needed.
Allowing the temperature to fall below 65°F at night can potentially lead to health issues in bearded dragons. Symptoms of chronic exposure to cool nighttime temperatures include decreased appetite, lethargy, and respiratory infections.
On the other hand, temperatures remaining above 80°F at night will prevent bearded dragons from experiencing a proper day/night cycle.
The ideal temperature range varies slightly depending on the age and size of your bearded dragon. Hatchlings and juveniles generally require slightly warmer temperatures than adult dragons. Always keep a close eye on temperatures and make adjustments as needed based on your pet’s behavior and activity levels.
Dangers of Low Temperatures
Lethargy and Appetite Loss
Low temperatures can cause bearded dragons to become more lethargic and lose their appetite. This happens because their bodies enter a state of brumation to conserve energy. When brumating, bearded dragons are less active, eat less frequently, and may sleep more.
Prolonged lack of appetite and lethargy from cold temperatures can lead to potentially dangerous weight loss and nutritional deficiencies.
Difficulty Digesting
Additionally, the cold slows down a bearded dragon’s metabolism and ability to properly digest food. Their digestive system essentially goes into a type of hibernative state along with the rest of their body. This can result in symptoms like:
- Constipation
- Intestinal impactions
- Discomfort and bloating
If a bearded dragon already struggling with digestion issues due to parasites, illness, or improper husbandry is then exposed to cold, it greatly exacerbates those existing problems. According to Bearded Dragons World, temperatures below 65°F can be extremely dangerous for their digestive health.
Respiratory Infections
The cold also weakens a bearded dragon’s immune system. This makes them far more prone to bacterial, fungal, and viral illnesses – especially dangerous respiratory infections. Their lungs and airways become compromised, often leading to symptoms like:
- Labored breathing
- Wheezing
- Discharge from nostrils/mouth
- Loss of appetite
- Lethargy
One study published in The Veterinary Journal found that a significant percentage of pet reptiles have underlying respiratory infections. Cold temperatures appears to often trigger or enable these infections to fully manifest in unhealthy animals.
Tips for Keeping Your Bearded Dragon Warm
Use Ceramic Heat Emitters
Ceramic heat emitters (CHE) are a great option for providing ambient heat in a bearded dragon’s enclosure. CHEs produce heat but no light, allowing you to maintain warm temperatures at night without disrupting your dragon’s sleep schedule.
Place a CHE above one end of the tank to create a warm basking area of around 95°F. Use a thermostat to regulate the CHE and prevent overheating.
Provide Basking Spots
Creating localized basking spots with heat lamps or heating pads allows your bearded dragon to self-regulate its temperature. Place the heat source at one end of the tank so it creates a temperature gradient from warm to cool. Your dragon can move between areas as needed.
Recommended basking temperatures are around 100-110°F directly under the lamp. Never use hot rocks as basking spots as they can cause burns.
Insulate the Enclosure
Tank location plays a key role in keeping temperatures stable. Place your bearded dragon’s habitat away from drafty windows or doors and avoid setting tanks directly on cold floors. Adding insulation like foam boards or reflective wrap around the back and sides can help hold in heat.
You can also insulate the tank’s lid to prevent heat loss from the top.
Monitor the Temperature
Investing in a few good thermometers is crucial for maintaining proper temperatures. Place thermometers at both the cool and warm ends of your habitat to monitor the gradient. Use probe thermometers to track basking spot temperatures.
Adjust heat sources as needed to keep temperatures in the optimal range. Shooting for a warm end/basking area of 95-110°F and a cool end around 80°F will keep your bearded dragon healthy and comfortable.
When to Be Concerned
Lethargy and Weakness
Bearded dragons are energetic reptiles that are very alert and inquisitive. If your bearded dragon is unusually lethargic, weak, or unresponsive, it can be a sign that something is wrong. Lethargy may indicate that the dragon is too cold and cannot properly regulate its body temperature.
Other potential causes of lethargy include dehydration, malnutrition, metabolic bone disease, parasites, respiratory infections, or impaction. If the weakness is accompanied by tremors or an inability to walk, it requires immediate veterinary attention.
Not Eating
A healthy bearded dragon has a strong appetite and will readily eat appropriately-sized feeder insects or fresh vegetables daily. Loss of appetite in bearded dragons can have many causes including stress, intestinal blockages, mouth rot, parasites, kidney/liver disorders, intestinal infections, or inadequate heating.
If the appetite loss persists for more than 2-3 days, you should have the dragon examined by an exotic veterinarian. Long term lack of food can lead to hepatic lipidosis, a potentially fatal liver disease in reptiles.
Darkened Color
Bearded dragons can exhibit darker skin color when they feel threatened, are sick, stressed, or too cold. However, if the darkened skin color persists even when conditions improve, it can be a symptom of a health problem.
Potential causes include intestinal infections, parasites, respiratory infections, dehydration, malnutrition, metabolic bone disease, or kidney/liver disorders. Take the dragon to a reptile vet if the darkened coloring does not lighten up within a day or two.
Visible Shivering
Shivering or shaking in bearded dragons is abnormal behavior and a clear sign that the body temperature is too low. It indicates that the dragon is unable to properly thermoregulate and maintain its optimal body temperature range of 95-110°F.
Shivering can be caused by an enclosure that is too cold, lack of adequate basking sites/heat lamps, respiratory infections, malnutrition, or underlying illness. If the shivering persists even after correcting enclosure temperatures and providing adequate heat sources, a veterinary examination is recommended to check for other health issues.
Conclusion
In summary, bearded dragons do best with warm daytime temperatures in the 70s and 80s Fahrenheit. Nighttime lows shouldn’t drop below 65°F. If temperatures get too cold, bearded dragons can experience health issues. Monitor your pet and enclosure temperatures closely.
With proper heating and housing, you can keep your bearded dragon comfortable even when ambient temperatures drop.
