After five years of extensive exploration, scientists from India have discovered seven new frog species belonging to the genus Nyctibatrachus, commonly known as night frogs. The frogs were found in the Western Ghats biodiversity hotspot in India. Four of the new species are among the smallest frogs in the world, tiny enough to sit on a coin.Read the whole story and see more great images: 7 M&M-Size Frog Species Found, Among World's Smallest.