Helps reptiles thermo-regulate for daily activity, appetite and metabolism. Easy-to-use adhesive mounting for optimal heat transfer. Energy-efficient external heat source Ideal heat source for desert and tropical species of reptiles, amphibians and arachnids. Reptiles rely on external heat sources to elevate their body temperature. Zilla Heat Mat Terrarium Heaters provide warmth for reptiles to absorb from their surrounding environment in order to maintain and thermo-regulate heat used for daily activities, appetite and digestion.