Amphibians are ectothermic, meaning they rely on external sources to regulate their body temperature, hence they are referred to as cold-blooded animals.

Understanding Amphibians
Amphibians are unique creatures that belong to a class of animals known for their distinct characteristics. They are primarily known as cold-blooded animals, which is reflected in their metabolism and physiological behaviors. Here’s a detailed explanation:
What Does Cold-Blooded Mean?
- Cold-blooded animals, or ectotherms, rely on external environmental temperatures to regulate their body heat.
- Unlike warm-blooded animals (endotherms), which maintain a constant body temperature, cold-blooded animals can experience fluctuations in their body temperature based on the surrounding environment.
Characteristics of Amphibians
- Diverse Habitats: Amphibians, such as frogs, toads, and salamanders, typically live both in water and on land during different stages of their life cycle.
- Skin: Their skin is permeable and plays a crucial role in respiration and moisture absorption, which is essential for their survival.
- Life Cycle: Most amphibians undergo metamorphosis, starting life as aquatic larvae (like tadpoles) and transforming into adult forms that can live on land.
Examples of Cold-Blooded Amphibians
- Frogs: Found in various environments, they spend significant time in water during their juvenile stage.
- Salamanders: Often found in moist environments, they have a similar reliance on temperature for their activity levels.
Conclusion
In summary, amphibians are classified as cold-blooded animals due to their dependence on environmental temperatures for body heat regulation. This classification highlights their unique adaptations and life cycles, making them fascinating creatures in the animal kingdom.