Sir David Attenborough hosts an exploration of the weird and wonderful world of frogs. Firsthand stories, the latest science and cutting-edge technology are used to demonstrate the wide variety of frog anatomy, appearance and behavior.

It may seem strange that among the more than 10,000 bird species in the world today is a group that literally cannot fly or sing, and whose wings are more fluff than feather. These are the ratites: the ostrich, emu, rhea, kiwi and cassowary. How and why these birds abandoned flight has puzzled scientists since Darwin’s time, but DNA and dedicated research are helping to solve these mysteries.

Paleontologists bring the largest dinosaur ever discovered to virtual life.

Go beneath the surface and meet Africa’s river giants, the hippos. Discover an unexpected side of these aquatic mammals that can’t even swim as hippos protect their families, face their enemies and suffer in a drought. Narrated by David Attenborough.

An ecologist tracks the lesser long-nosed bat’s epic migration across Mexico, braving hurricanes, snakes and seas of cockroaches, in order to save the species and the tequila plants they pollinate.