Why do reptiles have cold blood?

Answer 1

snakes are cold blooded because they are reptiles and have scales, if they were warm blooded they couldnt have scales and the venom keeps the venom poison..< What the crap? no dude.

reptiles have cold blood because their internal organs do not need to be warm to function smoothly, and correctly. unlike mammels that generate our own body heat because we do need warm organs to operate smoothly.

Cold-blooded animals, like reptiles, amphibians, and fish, become hotter and colder, depending on the the temperature outside. For example, when the sun sets at night, their bodies are cooler because it is less warm outside. When the sun is out, however, their bodies soak up the heat and become warmer.

Answer 2

Reptiles are ectothermic, meaning they rely on external sources of heat to regulate their body temperature. This is advantageous for conserving energy as they do not have to use energy to maintain a constant body temperature like endothermic animals. This cold-blooded nature allows them to adapt to a variety of environments with differing temperatures.