[1] The show was cancelled when he died in Alaska while shooting a documentary about the Iditarod Trail Sled Dog Race, when the Cessna 185 aircraft carrying him along with two Spanish cameramen and the American pilot crashed, killing all on board.

The South American series was filmed in 1973 in Venezuela in Los Llanos, the Orinoco and Amazon basins.

Using imprinted animals that had become accustomed to human presence, but retained their natural behavioral patterns, Rodríguez de la Fuente and his team filmed stunning images.

In Spain, it was awarded (Premio Ondas, Antena de Oro) and internationally (Monte-Carlo Television Festival).

[3] It is noteworthy that the episodes did not include a pre-filming script: Felix Rodríguez de la Fuente improvised the development of each chapter.