Difference Between Cold Blooded and Warm Blooded Animals (Are Fish Cold Blooded)

cold blooded vs warm blooded animals

Cold-blooded and warm-blooded animals are two different types of animals. Cold-blooded animals are those who cannot regulate their internal body temperature according to the required level. On the other hand, warm-blooded animals attempt to keep their internal body temperature maintained and do not change along with the external environment.

What are cold blooded animals?

Cold-blooded animals are those who cannot regulate internal body temperature. Instead, they depend on sunlight to get themselves warm. When the outside environment is cold, their bodies tend to be relaxed rather than provide warmth and vice-versa. However, to survive at night, particularly in the colder region, they need sunlight to gain radiation. 

However, these animals remain inactive during the cold or winter season. These animals need less amount of food because of their required energy is less. Cold-blooded animals are more resistant to diseases as they do not allow parasites and other micro-organisms to grow.  

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Cold Blooded Animals are Divided into Three Types-

  • Ectothermic: Their body temperature is maintained according to the external environment. Which means if there is sunlight, they can keep their temperature accordingly. At the time of moonlight i.e., moonlight, their body will bear to change their internal temperature again and become cold. Such as replies.
  • Poikilothermic: the heat of which fluctuates with the variation in temperature of the surroundings sources. For example, frogs and turtles. 
  • Brady metabolism: this type of animals depends on the rate of metabolism to which one’s body performs. Such as an insect. 

Facts about cold blooded animals:

  • Cold-blooded animals have changing body temperature, which means they follow the external temperature and cannot maintain their internal homeostasis.
  • These animals require less energy to maintain their body temperature; hence they need less amount of food.
  • Cold-blooded animals grew impervious against any other micro-organisms penetrating their body to cause diseases. 
  • These animals perform both hibernation and aestivation phase. 
  • The difference between these two phases is that the activity of the low metabolism process performed by the animals during winter known as hibernation. 
  • While the resting stage in shady and moist place at the time of summer known as aestivation. 
  • The body temperature of these creatures depends on the outside environmental temperature.
  • Cold-blooded animals cannot survive in any of the extreme temperatures unusually cold. 
  • The metabolic rates in their body changes with the change in the outside temperature.
  • Like the metabolic rate, the body temperature of these animals changes with the environmental temperature.
  • Examples of cold-blooded animals are- fish, reptiles, amphibians, and invertebrates. 

What are warm-blooded animals?

Warm-blooded animals are those creatures that can produce and maintain a body temperature higher than their environment. There is more stamina present in warm-blooded animals because they can produce energy due to their high metabolism rate. These animals are active during winters also. 

Mitochondria, also known as the powerhouse of the cell, creates energy used by the body to maintain the temperature. Throughout the life of warm-blooded animals, consistent energy has produced to balance the body temperature that lies from 35 to 40 degrees C.

 However, it had considered that if the outside temperature is extreme, then the body can change it a little bit to maintain or release excessive heat through sweating and panting. Such as elephants sweat through their ears while whales don’t need sweat glands because they live in water. 

There are three broad categories of warm-blooded animals-

  • Endothermic: animals falling in this category can maintain their body temperature by an internal source such as sweating and shivering like dogs.
  • Homeothermic: in this condition, the body regulates its required internal temperature regardless of the external temperature. Instead, the body tends to maintain a higher temperature than its surroundings. Not only animals but when we think of humans that are humans warm-blooded? The answer is yes because they can regulate their internal body temperature. 
  • Tachymetabolism: in this, the high metabolism rate is a result of body temperature. 

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Facts about warm blooded animals:

  • Warm-blooded animals can maintain their internal balance and keep their body temperature consistent regardless of the external temperature.
  • These animals require more energy to regulate their body temperature, so they need more food. 
  • Warm-blooded creatures have a healthy immune system.
  • Unlike cold-blooded animals, these animals do not go through the hibernation or aestivation phases.
  • The temperature of the body is independent in these animals and do not depend on the outer environment.
  • Warm-blooded animals can survive and are easily adaptable to any temperature and climate.
  • Environmental changes do not affect the metabolic rate of these creatures.
  • The body temperature of these animals generally ranges from 35 to 40 degrees Celsius.
  • An example of warm-blooded creatures is mammals. 

Comparison between cold blooded and warm-blooded animals:

The key difference between cold and warm-blooded animals are as follows-

  • Animals like invertebrates, amphibians, and reptiles fall under the category of cold-blooded animals. Now, if you think that are fish cold-blooded, then you are thinking right. All these are cold-blooded, whose body temperature changes with the change in the outside temperature. 
  • Cold-blooded animals need less energy than warm-blooded animals who need more power to produce heat and regulate their constant body temperature. 
  • The metabolism rate and temperature changes with the changes in the outside temperature. While in warm-blooded, these factors are independent.
  • Cold-blooded undergo two kinds of phases, which are hibernation and aestivation. On the other hand, warm-blooded animals do not follow such stages.
  • Warm-blooded animals have a more robust immune system. Cold-blooded animals protect themselves by lowering their body temperature from an attack by micro-organisms, parasites, and bacteria. 

Coldblooded vs Warmblooded: Conclusion

Above, we have discussed the difference between cold and warm-blooded animals. We are now aware of the essential features and unique way of living between these two creatures. And how these two have adapted to changes in environment and temperature. However, both are an adaptation of the situation eventually, as it is a matter of survival.

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