Cold-blooded animals do not maintain a constant body temperature. They get their heat from the outside environment, so their body temperature fluctuates, based on external temperatures. If it is 50 degreeF outside, their body temperature will eventually drop to 50 degreeF, as well.

Cold-blooded animals, also known as ectothermic animals, are organisms that cannot regulate their own body temperature internally. Instead, they rely on external sources of heat to warm up their bodies. This means that their body temperature fluctuates with the temperature of their environment.

Below, we will discuss the characteristics and adaptations of cold-blooded animals in more detail:

1. Body temperature regulation:
- Cold-blooded animals do not have the ability to maintain a constant body temperature like warm-blooded animals (endotherms) do.
- Their body temperature is determined by the temperature of their surroundings.
- For example, if a cold-blooded animal is exposed to a warm environment, its body temperature will rise, and if it is exposed to a cold environment, its body temperature will decrease.

2. Adaptations for surviving in different temperatures:
- Since cold-blooded animals rely on external heat sources, they have evolved various adaptations to survive in different temperatures.
- In warm environments, they may bask in the sun to absorb heat and increase their body temperature.
- In cold environments, they may seek shelter or burrow underground to conserve heat and prevent excessive cooling.

3. Metabolic rate:
- Cold-blooded animals have a lower metabolic rate compared to warm-blooded animals.
- This means that they require less energy to survive because they do not need to maintain a constant body temperature.
- Their metabolic rate increases as the environmental temperature rises, allowing them to become more active.

4. Behavioral adaptations:
- Cold-blooded animals exhibit various behaviors to regulate their body temperature.
- They may seek out different microhabitats within their environment to find the optimal temperature range.
- Some cold-blooded animals, such as reptiles, may change their body position to expose different parts of their body to different temperatures.

In conclusion, cold-blooded animals change their body temperature with the environment. They do not have the ability to maintain a constant body temperature like warm-blooded animals. Instead, they rely on external sources of heat and adapt their behavior and physiology to survive in different temperature conditions.