According to World Wide Fund for Nature (1999), there exist in the Pantanal 650 species of birds, 80 of mammals, 260 of fish and 50 of reptiles. It is a region of great importance for preservation of biodiversity, considered one of the biggest centers of reproduction of fauna of America. Already more than 263 species of fish, 122 species of mammals, 93 species of reptiles, 1,132 species of butterflies, 656 species of birds and 1,700 species of plants have been cataloged there.