"Warm-blooded" is used to describe animals that generate their own heat. Warm-blooded creatures are often called ectotherms. Mammals and birds are warm-blooded; reptiles and amphibians are cold-blooded.Know More
Reptiles and other cold-blooded animals must draw heat form the environment, and they are slower and less active when the temperature drops. They also have a slower metabolism, which is why they often spend long periods of time resting. However, being cold-blooded has an advantage: they do not have to eat as much as their warm-blooded counterparts.
In exchange for their more robust dietary demands, warm-blooded animals are able to cope with a broader range of environmental conditions, but hotter weather is often a greater threat than cold weather. Warm-blooded creatures are able to move at a faster rate of speed than cold-blooded ones. This is part of the reason why mammals and birds can migrate long distances.
Some creatures, however, are not clearly warm-blooded or cold-blooded. The dinosaurs, in particular, seem to straddle this gap. If they were strictly cold-blooded, they would have been far slower than most experts believe. If they were warm-blooded, their dietary needs would have been more than most think is realistic. While there is still a considerable amount of debate, many experts now believe that dinosaurs were neither truly warm-blooded nor cold-blooded.Learn more about Zoology
Mammals have hair or fur because they are warm-blooded, and hair helps to keep them warm or cool. Other than helping to regulate internal temperature, mammal hair also has special qualities depending on the species. For instance, porcupine hairs are tipped with barbs as a means of defense against predators.Full Answer >
Birds are warm-blooded. Warm-blooded animals are those that can generate enough body heat to regulate their own temperatures, rather than relying on the ambient environment for heat as in scaly reptiles, amphibians or most fish. Birds belong to one of the two broad groups of animals that are warm-blooded.Full Answer >
Technically, spiders are cold-blooded animals. A spider is ectothermic, which means it uses external sources like the sun to regulate its body temperature.Full Answer >
The difference between warm-blooded and cold-blooded animals involves the body temperature of the animal. Birds and mammals have warm blood and attempt to keep their internal parts at a set temperature. In a colder environment, their bodies create heat, and when they are in a warmer environment, their bodies cool themselves. Cold-blooded animals have the same temperature as their environment.Full Answer >