Titan, a moon of Saturn, although it does not have a huge subglacial liquid water ocean like Europa, but this one planet also has a large number of lakes and oceans on its surface, which are not liquid water but liquid methane. Its atmosphere is also filled with gases like nitrogen and methane

During the long evolutionary journey, the brain capacity and the complexity of the nervous system of primates have been increasing, and correspondingly, their intelligence has become higher and higher as a result

The world's largest frogs are carnivores, but when these giant frogs were tadpoles, they were super picky eaters and only ate a water plant that was a specialty of local waters