Most reptiles are cold-blooded, also known as ectothermic, meaning they rely on external sources of heat to regulate their body temperature. This is in contrast to warm-blooded, or endothermic, animals, which can generate internal heat to regulate their body temperature independently of the environment.
Cold-blooded reptiles, such as snakes, lizards, turtles, and crocodiles, often bask in the sun or seek out warm environments to raise their body temperature. Their metabolic rate and activity levels are influenced by environmental temperatures, and they may become sluggish in cooler conditions.
While there are some exceptions among reptiles, such as certain species of large monitor lizards that exhibit some degree of endothermy, the majority of reptiles are cold-blooded. Mammals and birds, on the other hand, are examples of warm-blooded animals that can maintain a relatively constant internal body temperature regardless of external conditions.
