This is one of Isaac's favorite books, partially because it has textures on each page and partially because the last page fold out to a leaping frog. Last night he took it to bed with him and read it to himself for about an hour before falling asleep, which is normal. Then I woke up at 2am to Isaac yelling "Frog!" He continued to read the book over and over again until 4am yelling "Frog!" at the end every time. While I love that he was reading in bed, I do not love that it kept me awake and that he woke up for the day at 6am.