Maned wolf, giant armadillo, giant otter, giant anteater, and marsh and pampas deer are among the endangered species to be found in the Parque Nacional das Emas, the National Park of the Rheas, in Brazil. But the park is in danger of losing much of its value because boundaries were wrongly drawn and vital areas omitted. The author urges the need for international funds to help Brazil create in Das Emas a well planned, well guarded and well equipped park that will be outstanding in Latin America.