For example, when the external temperature is high, the body temperature of mammals may increase slightly in order to help them cool down. When the external temperature is low, the body temperature of mammals may decrease slightly in order to help them conserve heat.
In addition, the body temperature of mammals can also fluctuate in response to other factors, such as activity level, sleep, and stress.
Here are some specific examples of how the body temperature of mammals changes with the environment:
* Humans: The average body temperature of humans is 37 degrees Celsius (98.6 degrees Fahrenheit). However, the body temperature of humans can fluctuate by up to 1 degree Celsius (1.8 degrees Fahrenheit) during the day. For example, the body temperature of humans is typically lowest in the morning and highest in the evening.
* Dogs: The average body temperature of dogs is 38-39 degrees Celsius (101-103 degrees Fahrenheit). However, the body temperature of dogs can fluctuate by up to 2 degrees Celsius (3.6 degrees Fahrenheit) during the day. For example, the body temperature of dogs is typically lowest in the morning and highest in the afternoon.
* Cats: The average body temperature of cats is 38-39 degrees Celsius (101-103 degrees Fahrenheit). However, the body temperature of cats can fluctuate by up to 3 degrees Celsius (5.4 degrees Fahrenheit) during the day. For example, the body temperature of cats is typically lowest in the morning and highest in the evening.
The ability of mammals to maintain a constant internal body temperature is essential for their survival. Endothermy allows mammals to be active in a wide range of environments, and it also helps them to maintain their health and well-being.