Cathemerality in lemurs

  1. Do you believe that cathemerality in lemurs is a response to large lemurs going extinct? Explain. 

  2. What are the pros and cons of being nocturnal, cathemeral, or diurnal. Why do these different activity patterns exist? 

  3. Explain what kind of adaptations help strepsirrhines and tarsiers in being nocturnal or cathemeral.