Difference Between Cold Blooded And Warm-Blooded Animals
Gobinath Thilagar
3 min read
Animals are generally classified into two major categories: cold-blooded animals and warm-blooded animals based on how they regulate their body temperature. Cold blood animals depend on the external environment for maintaining their body temperature and while warm blood animals maintain a stable internal temperature.
In this article, we will explore what are cold blooded animals, what are warm blooded animals and the difference between cold blooded and warm-blooded animals with examples.
Cold-blooded animals are animals which are unable to automatically control their body temperature. Instead, maintaining their body temperature mainly depends on the external environment. The scientific term for cold-blooded animals is ectothermic animals.
Cold-blooded animals often sit in the direct sunlight or find warm surfaces like sand or rock to regulate their internal body temperature. This is crucial for maintaining metabolic functions and their body functions. Cold-blooded animals also regulate their body temperature by burrowing or submerging themselves in water.
Examples: Fish, Amphibians (e.g., frogs, salamanders), Reptiles (e.g., snakes, lizards, turtles), Most invertebrates (e.g., insects, spiders).
Warm-blooded animals, scientifically known as endotherms are a wide range of animals including mammals, birds and few other animals are characterized by their ability to regulate their body temperature internally rather than relying on external environment.
Endothermic animals maintain body temperature through metabolic processes inside the body, mainly through breaking down food. When warm-blooded animals digest food, it produces energy in the form of ATP. They burn through this energy to produce heat. This internal heat warm-blooded maintains its internal body temperature.
Warm-blooded animals have different ways of staying warm, mostly through thick fat later, layers of air or thick coats of fur. They also have ways to cool them down during hot temperatures including panting, shedding fur, wetting themselves in water and staying out of the sun.
In this article, we will explore what are cold blooded animals, what are warm blooded animals and the difference between cold blooded and warm-blooded animals with examples.
Definition of Cold-Blooded Animals
Cold-blooded animals are animals which are unable to automatically control their body temperature. Instead, maintaining their body temperature mainly depends on the external environment. The scientific term for cold-blooded animals is ectothermic animals.
Cold-blooded animals often sit in the direct sunlight or find warm surfaces like sand or rock to regulate their internal body temperature. This is crucial for maintaining metabolic functions and their body functions. Cold-blooded animals also regulate their body temperature by burrowing or submerging themselves in water.
Examples: Fish, Amphibians (e.g., frogs, salamanders), Reptiles (e.g., snakes, lizards, turtles), Most invertebrates (e.g., insects, spiders).
Definition of Warm-Blooded Animals
Warm-blooded animals, scientifically known as endotherms are a wide range of animals including mammals, birds and few other animals are characterized by their ability to regulate their body temperature internally rather than relying on external environment.
Endothermic animals maintain body temperature through metabolic processes inside the body, mainly through breaking down food. When warm-blooded animals digest food, it produces energy in the form of ATP. They burn through this energy to produce heat. This internal heat warm-blooded maintains its internal body temperature.
Warm-blooded animals have different ways of staying warm, mostly through thick fat later, layers of air or thick coats of fur. They also have ways to cool them down during hot temperatures including panting, shedding fur, wetting themselves in water and staying out of the sun.
Difference Between Cold Blooded And Warm-Blooded Animals
| Cold-Blooded Animals | Warm-Blooded Animals |
| Body Temperature | |
| Changes with the temperature of the surroundings. | Body temperature stays nearly constant all the time. |
| Heat Source | |
| Gets heat mainly from sunlight and the environment. | Produces heat inside the body using food energy. |
| Food Requirement | |
| Usually needs less food for daily activities. | Usually needs more food to meet energy needs. |
| Temperature Range | |
| Changes with the temperature of the surroundings. | Usually stays constant, around 36–39°C in mammals and 40–42°C in birds. |
| Metabolism | |
| Body processes slow down in cold conditions. | Body processes help maintain a steady body temperature. |
| Movement | |
| May move slowly in cold weather. | Can remain active in cold weather. |
| Cooling the Body | |
| Often moves to shade or cool places. | May sweat or pant to cool down. |
| Winter Survival | |
| Some become inactive or enter dormancy. | Some grow thicker fur or feathers to stay warm. |
| Temperature Control | |
| A frog's body temperature changes with its surroundings. | A human's body temperature is usually around 37°C. |
| Examples | |
| Snake, frog, lizard, fish, and turtle. | Human, dog, cow, pigeon, and penguin. |
