How do iguanas respond to light?

Iguanas are ectothermic reptiles that rely on external light sources to regulate their body temperature and metabolic processes. They are sensitive to UVB light, which is essential for synthesizing vitamin D3, crucial for calcium metabolism and bone health. In their natural habitat, iguanas bask in sunlight to absorb warmth and UV rays, while they often seek shade to avoid overheating. Their circadian rhythms are also influenced by light, affecting their activity patterns and behavior throughout the day.