Fascinating Penguin Facts: It is tough, to not fall in love with the waddling, tuxedo-wearing penguins. Ranging from the Little Blue Penguin to the mighty Emperor Penguin, these adorable species are undoubtedly one of the smartest and active birds on the planet. Every year, on April 25, World Penguin Day is celebrated with activist coming together, organising awareness campaigns to save this endangered species. Hence, in the honour of World Penguin Day 2019, we have rounded up some of the best and fascinating Penguin facts that you probably didn't know about these aquatic birds.