The Manu Biosphere Reserve is one of the world's most biodiverse places on the planet. A UNESCO World Heritage site covering 18,000 km² of the Amazon Basin, the Manu Biosphere Reserve is the largest rainforest reserve in the world. Its altitude ranges from 3,800 m at the top of Apu Kañahuay down to 300 m, where the Manu River converges with the Alto Madre de Dios.
Home to over 3,000 plant species,1,000 vertebrate species, 1000 species of birds and at least 200 species of mammals - this tropical oasis is a treasure trove of nature. Recorded mammals include the giant otter (Pteronura brasiliensis), giant armadillo (Priodontes maximus), emperor tamarin (Saguinus imperator), brown-throated sloth (Bradypus variegatus), 13 different species of primates and eight felids, including the jaguar (Panthera onca), cougar (Puma concolor), and the elusive and endangered Andean mountain cat (Leopardus jacobita).