Reptiles and frogs of the Eastern Highlands and heavy mists and dew as moisture moves inland from the Indian Ocean. Many streams and rivers originate in these mountains, which form the watershed between the Zambezi and Save River systems. Reptiles and frogs of the Eastern Highlands The reptiles and frogs of the Eastern Highlands of Zimbabwe and Mozambique mark a biodiversity hotspot for herpetofauna. Diverse frog and reptile communities include endemic species. The Eastern Highlands extend 300 kilometres (190 mi) along Zimbabwe's eastern border with Mozambique. There are two broadly defined high-altitude ecological habitats in the Eastern Zimbabwe montane forest-grassland mosaic; a wet lowland forest ecology predominates
Evolution of reptiles of bipedalism was traded for a generally low quadrupedal stance for an easy and less noticeable entrance to bodies of water. The shape of the skull/jaw changed to allow more grasp along with upward-pointing nostrils and eyes. Mimicry is evident, as the backs of all crocodilia resemble some type of floating log and their general color scheme of brown and green mimics moss or wood. Their tail also took on a paddle shape to increase swimming speed. The only remaining groups of this order are the alligators and caimans; crocodiles; and gharials. Evolution of reptiles Reptiles arose about 310–320 million