Cold blooded and Warm blooded animals .
The difference between warm-blooded and cold-blooded animals.
All living creatures must keep their body temperature suitable for their cells to work. But not all do it the same way.
🔥 Warm-blooded animals
Animals like mammals and birds are called warm-blooded, or homeothermic.These creatures have a special ability — they can control their own body temperature from the inside.
Even if it’s freezing cold or extremely hot outside, their internal temperature stays almost the same.Humans, for example, maintain about 37°C constantly.
This happens because their cells burn food molecules, releasing energy as heat.That heat keeps their organs warm and their enzymes working at full speed.
That’s why a polar bear can survive in the Arctic and a camel can live in the desert — both maintain their body temperature no matter what the weather is.
🧊 Cold-blooded animals
On the other hand, reptiles, fish, amphibians, and insects are cold-blooded, or poikilothermic.Their body temperature changes with the environment.
If the surroundings are cold, their bodies become cold and slow.If the surroundings are warm, their bodies become active and fast.
They don’t produce enough internal heat on their own, so they use the Sun or warm surfaces to raise their temperature.That’s why you’ll often see a lizard basking in sunlight — it’s charging its body like a solar panel.
⚖️ In simple terms:
Warm-blooded animals make their own heat.Cold-blooded animals borrow heat from the world around them.
🌱 Why it matters
This difference decides where animals can live, when they hunt, and how much food they need.Warm-blooded animals eat more to fuel their internal heater, while cold-blooded ones can survive longer without food by slowing down their body processes.
So, whether it’s a tiny hummingbird keeping its heart beating fast in the cold air, or a crocodile waiting silently under the tropical sun — every species has its own way of mastering temperature and surviving on Earth.