How do I choose the right heat source for my guinea pig's cage?
Maintain a basking side of 75°F (24°C) and a cool side of 65°F (18°C) with a humidity range of 40–60% and 12 hours of natural light daily.
Temperature Gradient
Guinea pigs require a temperature gradient within their cage. This means one side should be warmer for basking, typically around 75°F (24°C), while the other side should be cooler, around 65°F (18°C). This gradient allows them to regulate their body temperature by moving between the warm and cool sides.
The temperature gradient is crucial because guinea pigs are unable to regulate their body temperature internally like mammals with fur. They rely on external heat sources and their own body heat to maintain a stable temperature. Providing a gradient gives them control over their environment.
- Maintain a basking side of 75°F (24°C).
- Ensure the cool side is around 65°F (18°C).
- Guinea pigs should be able to move between the warm and cool sides to regulate their body temperature.
Controlling Heat
To control the temperature gradient, use a heat source like a ceramic heat emitter or a heat lamp. Place the heat source on a thermostat to maintain the basking side at 75°F (24°C).
Position the heat source on one side of the cage, leaving the opposite side as the cool side. Ensure the heat source is at least 12 inches above the ground to prevent burns.
Monitor the temperature at the animal's level, not at the top of the cage, to ensure it's comfortable.
- Use a ceramic heat emitter or heat lamp on a thermostat.
- Position the heat source 12 inches above the ground.
- Monitor the temperature at the animal's level.
Humidity and Lighting
Maintain a humidity range of 40–60% in the cage. Use a substrate like aspen shavings and ensure good ventilation to control humidity.
Provide 12 hours of natural light daily to simulate the guinea pig's natural environment. If natural light is insufficient, use a light with a color temperature of 6500K.
Regularly check the humidity with a hygrometer and adjust the substrate or ventilation as needed.
- Maintain humidity between 40–60%.
- Use aspen shavings as substrate and ensure good ventilation.
- Provide 12 hours of natural light or use a 6500K light.
Observable Signs
If the basking side is too hot, guinea pigs may overheat, become listless, and have difficulty breathing. They may also seek shade or water more frequently.
If the cool side is too cold, guinea pigs may huddle together, have a shivering body, and may not eat as much. They may also develop respiratory issues.
Monitor your guinea pig's behavior and physical condition to ensure the temperature is within the appropriate range.
- Overheating signs: listlessness, difficulty breathing, seeking shade.
- Underheating signs: huddling, shivering, decreased appetite, respiratory issues.
Keep reading about Guinea Pig: Guinea Pig care sheet
Related questions
How often should I check the temperature in the cage?
Check the temperature at least twice a day, especially during extreme weather conditions.
What should I do if my guinea pig is shivering?
Increase the temperature on the cool side to around 70°F (21°C) and provide a warm blanket or towel.
How can I tell if the humidity is too high?
If you notice condensation on the cage or if the substrate feels damp, the humidity is too high. Reduce it by adding more ventilation or changing the substrate.
Not veterinary advice. This guide covers husbandry — housing, feeding, cleaning and handling. If your guinea pig is injured, off food unusually long, or behaving abnormally, contact a veterinarian.