Fiction: Can Penguin find a way to turn his grumpy day into a good night?Have you ever had a grumpy day and not known why? Penguin is having a grumpy day like that. No matter what he does, he just can't shake it! Sometimes the only thing left to do is wash the grumpy day away and start over. The simple text and lively illustrations are the perfect cure for even the grumpiest of days.Nonfiction: Did you know that some penguins slide across snow and ice on their bellies? This helps them go faster. Discover these and other interesting facts in Penguins.