My 4 year old GD spent the night with me last night. As always, getting her to bed was a time consuming project. After sleeping for about an hour and half, she sat up in bed and said she was starving. So, we got up, went to the kitchen to prepare something to eat. As I was working on the food, she said "Nana, We're 'not turtles'. It took me a minute, but realized she had said we're nocturnal. She may be, buy I certainly need my sleep at night.