托福口语 Task 4

Today, we're going to discuss a fascinating concept in animal behavior called 'behavioral thermoregulation.' This refers to the ways animals actively adjust their behavior to control their body temperature, rather than relying solely on physiological mechanisms like sweating or shivering. Let me give you two examples. First, consider the desert lizard. In the scorching heat of the day, it will seek shade under rocks or burrow into the sand to avoid overheating. However, in the cooler morning hours, it will bask in the sun to raise its body temperature, enabling it to move quickly and digest food. Second, think about honeybees. In a hive, when temperatures rise too high, worker bees will gather water and spread it over the comb, then fan their wings to create evaporative cooling. Conversely, when it gets cold, they cluster together and shiver their flight muscles to generate heat. These behaviors show that animals actively manage their thermal environment to maintain optimal functioning.