WARM AND COLD BLOODED ANIMALS
by Corey Atkins
| Cold Blooded and Warm Blooded; what’s the difference? | |
| Cold blooded: Cold blooded animals are animals that changes temperature as its environment’s temperature changes. They hang out in the sun to heat up their body. They can expand their rib cage and darken their skin to suck in heat. They shiver and stay together to stay warm. In winter, they go into a DEEP hibernation. They’re body some-what entirely shuts down. Some insects entirely die, but others hibernate. | Warm blooded: Warm blooded animals are animals that always maintain one temperature range at all times. This allows them to hibernate during the cold winter. Warm blooded animals need to cool and heat themselves. They pant, sweat and get wet to stay cool. They have hair, fur, blubber, and feathers to keep warm. Shivering also keeps them warm. |
| Advantages: Cold blooded animals are lucky because they require much less energy survive and stay warm. They are also much less prone to getting bacteria and viruses because these microrganisms don’t grow well in cold environments. | Advantages: Warm blooded animals are lucky because they can live just about anywhere, because no matter where they are, their body will always have the same temperature. |
| Disadvantages: Cold blooded animal’s activity level depends on their surrounding temperature. If it’s cold, they’re much more likely to be eaten or caught because they’re much slower in cold weather. If it’s warm, they’re speedy and quick and are less likely to be caught. | Disadvantages: Because Warm blooded animals need more energy to heat them, they need to eat more and less of the food goes towards growing. They also are more prone to viruses and bacteria because these microrganisms like warmer environments. |
| Animal Examples: Insects and Reptiles are Cold blooded. | Animal Examples: Mammals and birds are Warm Blooded. YOU are a warm blooded mammal! |
COOL FACTS ABOUT WARM AND COLD BLOODED ANIMALS: Dinosaurs were cold blooded when they roamed the earth, but as they evolved, they became warm blooded.
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This Pig is warm blooded. If you notice, the only places colder than about 93 degrees, is the snout, feet and slim outline of him. The person rubbing his back, is warm blooded too, but the person's clothes aren't being heated, so the person looks cold. This is the same with most birds too. Their feathers are cold, but that's only because inside the feathers is the only thing that matters. |
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This Lizard is cold blooded. Notice how he looks so warm around his head. That's because he's actually basking in the sunlight coming in through that window. His feet and tail look colder because they are parts of the body that aren't as close to the heat source in his body as other parts of him. Look at the way his head is warmest. His head is also closest to the window. (p.s., notice that the temperature scale is different than the pig's) |
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SOURCES
"Hot-blooded or Cold-blooded?" http://www.enchantedlearnig.com/subjects/dinosaurs/enatomy/blood.shtml, 1996-2004, Enchanted Learnign software.
http://coolcosmos.ipac.caltech.edu/cosmic_classroom/light_lessons/our_world_different_light/animal.html, "Cool Cosmos" ipac nasa Michelle Thaller: manager.