The evolution of warm-blooded animals remains one of nature’s greatest mysteries. Most life forms on Earth were cold-blooded for millions of years, relying on the sun and their habitats for warmth. However, against all odds, certain species started to develop the ability to generate their own heat.
How did this happen, and what pushed life in this direction? Scientists have pieced together some clues, and we may have begun to unravel this fascinating mystery. In this gallery, we explore the different circumstances that led to the evolution of warm-blooded animals. Interested? Click to know more.