Which organisms are cold-blooded?

Cold-blooded organisms, also known as ectothermic animals, are animals whose body temperature is largely determined by the temperature of their environment. This means that their body temperature fluctuates with the temperature of their surroundings, and they cannot maintain a constant internal body temperature.

Examples of cold-blooded animals include:

- Fish

- Amphibians (such as frogs, salamanders, and toads)

- Reptiles (such as lizards, snakes, and turtles)

- Invertebrates (such as insects, spiders, and worms)

Cold-blooded animals often rely on external sources of heat, such as sunlight or warm rocks, to raise their body temperature. They may also seek shelter in cooler environments, such as burrows or under leaves, to avoid overheating.

In contrast, warm-blooded animals, or endothermic animals, can maintain a constant body temperature regardless of the temperature of their environment. This is because they have internal mechanisms, such as a high metabolic rate and insulation, that help them generate and conserve heat. Examples of warm-blooded animals include mammals and birds.