Myth 140: “When a Chameleon is Sick, Increase the Temperature”

The Misguided Advice

Well‑meaning keepers often share health concerns too late, and others respond with kind but harmful suggestions: "Keep him warm and comfortable." This instinct comes from mammalian medicine, but chameleons are not mammals.

Why Warmth Helps Mammals

Mammals generate their own heat. Fever is a defense mechanism: raising body temperature slows pathogens and mobilizes immune responses. Keeping a sick mammal warm supports this natural process.

Why Warmth Harms Chameleons

Chameleons are ectotherms. They do not produce fever; their body temperature is dictated entirely by the environment. Raising heat speeds up metabolism, which accelerates bacterial growth and drains energy reserves. Instead of healing, the animal suffers, weakens, and often dies.

The Role of Cool Temperatures

Low temperatures allow rest, reconciliation of processes, and sleep—conditions essential for recovery. Heat prevents this, forcing activity when the body needs stillness.

Correct Response

When a chameleon shows discomfort, pale coloration, or sunken eyes, switch off the heat bulbs and keep the environment cool, not warm. Seek advice from an experienced specialist or veterinarian immediately.

Disclaimer

In some cases, a veterinarian may prescribe antibiotics or other treatments that require a slight increase in daytime temperature. This must be done only under professional guidance, and never at night.

Conclusion

Chameleons are not mammals. Warming them when sick is not comfort—it is harm. True care means cool rest and expert intervention.